Does EasyBill really work 100% offline without an internet connection?

Yes, EasyBill functions 100% offline without an internet connection. All business profiles, item catalogues, customer ledgers, and finalized bills are stored locally inside your Chrome browser using IndexedDB. You can create invoices, calculate taxes, download A4 PDFs, and print receipts anytime during internet outages. No login, password, or cloud server connection is ever required to operate EasyBill. All customer data and financial numbers stay strictly on your local computer hard drive. PDF generation runs completely client-side in your browser using local vector rendering. When your shop or contractor site loses internet, your billing speed is never interrupted.

How does the Chrome Side Panel work alongside WhatsApp Web, and how is it different from the Full Screen view?

The Chrome Side Panel opens a compact 360-pixel billing window right next to your open WhatsApp Web tab. You can look at a customer chat, type their bill details, and generate a WhatsApp payment link without tab switching. Full Screen view provides an expansive 1440-pixel desktop dashboard with side-by-side A4 paper preview. Side Panel mode keeps your active customer chat visible on the left while billing on the right. Includes a quick sub-toggle between "Fill Bill Details" and "See Final Bill Paper" in 360px. Full Screen view displays all 12 modules, full tables, and real-time live A4 sheet rendering. Both views stay perfectly in sync in real time using local browser BroadcastChannel messaging.

How does EasyBill calculate Indian GST (CGST, SGST, and IGST) and handle tax-inclusive vs. tax-exclusive prices?

EasyBill calculates Indian GST offline using fixed-point Decimal arithmetic to prevent floating-point rounding errors. If your shop state code matches the customer state code, tax is split equally into CGST and SGST. If state codes differ, full IGST applies. It accurately computes both tax-exclusive and tax-inclusive pricing modes. Intra-State: 50% CGST + 50% SGST is applied automatically when state codes match. Inter-State: 100% IGST is applied automatically when billing across state borders. Tax-Exclusive: Adds statutory GST (5%, 12%, 18%, 28%) on top of your base price. Tax-Inclusive: Back-calculates the exact base price and tax with zero 1-paise discrepancy. Includes an optional checkbox to round off fractional paise to the nearest Rupee (ROUND_HALF_UP).

Can I use this extension if my small business or shop does not have a GST number (Unregistered / Bill of Supply)?

Yes, small shops, contractors, and freelancers without a GSTIN can use EasyBill freely. You can toggle the document type to Bill of Supply or Non-GST Bill. The extension will automatically set GST to 0% and hide tax columns while keeping professional branding, item details, and payment receipts intact. Enter your business name, address, and phone number without filling the optional GSTIN field. Select 0% / Nil-Rated or toggle to Bill of Supply to generate statutory non-tax bills. All customer records, payment tracking, and receipt printing work identically. If you register for GST later, simply add your GSTIN in Settings to enable tax billing.

Can I manage multiple shops or companies from the same Chrome browser without mixing up bills or customers?

Yes, EasyBill includes a multi-business profile switcher in the top bar. You can manage unlimited separate businesses, shops, or firm names from one browser. Each business maintains its own distinct GSTIN, state code, address, bank accounts, custom logo, item catalogues, and independent bill numbering sequences. Switch between firms in a single click without logging out or reloading the page. Prefixes like INV-2026-, RHE-26-, and APX- increment independently for each business. Customer lists and financial reports remain completely isolated in local database tables. Perfect for entrepreneurs managing a retail shop, a contracting firm, and an agency.

What happens to my old finalized bills if I change a customer address, my business logo, or an item price later?

Nothing happens to your old finalized bills. When you click Save & Make Final Bill, EasyBill takes an immutable snapshot of all business details, customer information, item names, and tax calculations. Changing master prices, addresses, or logos later will never alter previously issued historical bills. Protects your business records and Chartered Accountant audits from accidental corruption. Draft bills remain editable until finalized; final bills freeze permanently. To adjust a finalized bill, issue a formal linked Credit Note or Debit Note. You can also cancel a wrong bill with a mandatory audit reason instead of deleting it.

How do I fix a mistake on a finalized bill or a wrongly typed payment entry?

To fix an issued bill without altering audit history, EasyBill provides linked Credit Notes for returns or reductions, and Debit Notes for extra charges. For payment mistakes, the Money Received module features a safe Cancel Wrong Entry action that restores the outstanding bill balance while logging the reversal. Credit Notes reference the original bill number, date, and adjusted tax breakdown. Cancel This Bill marks the voucher as cancelled without deleting the sequence number. Payment reversals recalculate the customer outstanding balance instantly in the passbook. Zero financial records are silently overwritten, ensuring complete ledger integrity.

What special features are included for service contractors like pest control, AC repair, and AMC businesses?

EasyBill includes a dedicated Service Work Box on the SERVICE_PRO template specifically designed for contractors. You can record Property Type (3BHK, Commercial Office), Premises Area, Treatment or Service Done, Scheduled vs Completed Visits (e.g. Visit 1 of 4), Technician Name, and Warranty Period directly on the bill. Ideal for pest control, air conditioning servicing, CCTV maintenance, and deep cleaning. Lets customers clearly see how many service visits are remaining under their contract. Shows the assigned technician name and service warranty expiration on the A4 PDF. Includes a footer bar listing your authorized service cities and branch coverage.

How do Price Quotes (Estimates) and 1-click conversion into a Final Bill work?

The Price Quotes module lets you prepare professional work estimates with a Scope of Work section, custom payment terms, and a Valid Until Date banner. When a client approves the quote, clicking Make Final Bill from this Quote instantly generates a new GST bill without retyping any items. Avoid customer disputes with clear scope descriptions and validity expiration dates. One click copies all line items, quantities, HSN codes, and discounts to the bill editor. The original quotation is automatically marked as "Turned to Bill" with the invoice link. Supports sharing quotation PDFs directly to customers over WhatsApp.

How do Repeat Bills (Recurring Invoices) work when Chrome is closed over the weekend?

EasyBill uses Chrome Alarms to check repeat bill schedules whenever Google Chrome is open. If your computer was shut down over a weekend or holiday, the extension detects the missed schedule upon opening and generates the due invoice with an idempotent occurrence key, preventing duplicate billing. Schedule bills to repeat Weekly, Monthly, Quarterly, Yearly, or on a specific day. Idempotent occurrence keys ensure each billing period is billed exactly once. Generates bills automatically in Draft or Final status according to your preference. Displays an alert banner showing newly generated repeat bills ready for customer dispatch.

Where is my business data stored, and how do I back it up or move it to a new computer?

All business data is saved locally in your Chrome browser IndexedDB database. EasyBill provides a 1-click Download Backup button in Settings that exports a clean .json file to your computer or USB drive. When moving computers, load this backup using the dry-run preview to verify records before merging. Your financial figures, phone numbers, and customer lists never touch any cloud server. Export a full JSON backup file anytime to keep in your Google Drive or local backup folder. Restore includes a pre-flight inspection screen displaying the exact count of bills and customers. Choose between Safe Merge (adds missing items) or Full Replace (replaces local database).

Is EasyBill free, and does it read my browsing history or send my billing data to any server?

EasyBill is free and privacy-first. Under Chrome Manifest V3, it requests zero host permissions, meaning it is technically impossible for the extension to view your browsing history, read tabs, or access external websites. EasyBill contains zero tracking scripts, zero ads, and zero server telemetry. Zero host_permissions ( ) requested in chrome manifest.json. Zero content_scripts injected into your browsing sessions or visited websites. Only requests storage, sidePanel, alarms, and unlimitedStorage to function locally. Free forever for Indian small business owners, contractors, shops, and freelancers.

Make GST Bills, Price Quotes & Payment Receipts Right Inside Google Chrome.

Whether you run a service contracting business (Pest Control, AC Repair, AMC, Agency) or a retail/wholesale shop, make clean A4 PDF bills in 60 seconds. Use it in the compact 360px Side Panel alongside WhatsApp Web, or open the expansive Full Screen Bill Book.

Add to Chrome — It's Free Try Live A4 Bill & PDF Preview Try Live GST Calculator

Works 100% Without InternetZero Monthly Subscription FeesYour Data Never Leaves Your Computer

Active Firm:

Google Chrome — Side by Side Billing

web.whatsapp.com+

EasyBill Side Panel (360px)

Sanjay Kapoor (Balaji Builders)

online • typing...

WhatsApp Web

Namaste Sharma ji, pest control treatment done today at our GK-2 flat was very good.

Please send the official GST bill with 1-year warranty details so accounts can release payment today.

10:42 AM

Thank you Sanjay ji! Making your bill in EasyBill Side Panel right now. Will share the A4 PDF and UPI link in 30 seconds.

10:43 AM

Perfect! Also mention 4 scheduled visits in the bill.

10:44 AM

EasyBillSharma Pest Control & Services

Step 1: CustomerDelhi (07) • Same State

Sanjay Kapoor (Balaji Builders)

+91 98450 12345 • Flat 402, GK-2

Step 2: Service Work Box

Premises:

3BHK Flat (1850 sq.ft)

Treatment:

Herbal Pest AMC

Visits:

1 of 4 Completed

Warranty:

1 Year Warranty

Step 3: Line Items (1 Item)

Herbal Pest Treatment AMC₹2,500.00

SAC: 998531 • 18% GSTCGST ₹225 + SGST ₹225

Final Bill Amount:₹2,950.00

Interactive Live GST Calculator

Deterministic Decimal.js GST Calculation Engine

Test the exact mathematical engine running inside the Chrome extension. Supports intra-state CGST+SGST, inter-state IGST, tax-inclusive vs. tax-exclusive pricing, and automatic Rupees-in-Words conversion with zero rounding drift.

Quick-Load Presets:

Step 1: Your Shop State & Delivery StateINTRA-STATE (CGST + SGST)

Your Shop / Business State:

Where is the work / delivery state?

✓ Same State (07): Both your shop and customer are in the same state. Tax splits 50% Central GST (CGST) + 50% State GST (SGST).

Step 2: Bill Type & Service Work Box

Contractor Specification Fields:

Property / Premises:

Premises Area:

Treatment / Work Done:

Completed vs. Total Visits:

ofVisits

Step 3: Line Items & GST Mode

Add GST extraPrice includes GST

Item #1

Item Name:

HSN/SAC:

GST Slab:

Qty:

Rate (₹):

Discount (₹):

Taxable: ₹2500.00 + Tax (18%): ₹450.00= ₹2950.00

Step 4 & 5: Summary & Total[✓] Round off paisa

Total Before GST:₹2,500.00

Central Tax (CGST):₹225.00

State Tax (SGST):₹225.00

Final Bill Amount₹2,950.00

Tax Extra

Rupees in Words:

Rupees Two Thousand Nine Hundred Fifty Only

See This Bill in A4 Preview Below

Interactive Template Gallery & Design Studio

6 Ready-Made Printable A4 Bill Designs

Customize colors, typography, and visible sections in real time. Click below to print or save any template directly as an authentic A4 PDF.

Brand Color:

Font:

Logo Size:

[✓] Show HSN / SAC Code[✓] Show Discount[✓] Show Service Work Box[✓] Show Bank & UPI[✓] Show Amount in Words[✓] Show Certification Badge[✓] Show Service Cities Bar

Currently Viewing: TAX INVOICE / SERVICE BILL (INV-2026-0024)

Clean vector A4 layout formatted for standard 210mm × 297mm desktop paper printing.

Sharma Pest Control Services Private Limited

Shop 14, Commercial Complex, Mayur Vihar Phase 1, New Delhi - 110091

Phone: +91 98111 22334Email: contact@sharmapestservices.exampleState: Delhi (07)

✓ ISO 9001:2015 CERTIFIED PEST MANAGEMENT

GSTIN: 07AAAAA0000A1Z4

TAX INVOICE / SERVICE BILLOriginal For Recipient • Intra-State

Billed To / Customer Details:

Sanjay Kapoor (Shri Balaji Builders)

Flat 402, Tower B, Palm Meadows, Greater Kailash 2, New Delhi - 110048

State: Delhi (07)

Phone: +91 98450 12345

Customer GSTIN: 07AABCS1234F1Z8

Document No:INV-2026-0024

Date of Issue:27 Oct 2026

Payment Due Date:06 Nov 2026

🛠️ Service Work Details & Warranty SpecificationVisit 1 of 4 Completed

Premises / Property:3BHK Residential Flat (1,850 Sq.Ft)

Treatment / Service Done:Herbal Gel Pest Control & Anti-Termite Wood Treatment

Assigned Technician & Warranty:Ramesh Kumar (Badge #104) • 1 Year Free Service Warranty

#	Item / Service Description	HSN/SAC	Qty	Rate (₹)	Discount	GST %	Amount (₹)
1	Herbal Odourless Cockroach & Pest Gel Treatment (1-Year AMC)	998531	1 Contract	2800.00	₹300.00	18%	2950.00
2	Anti-Termite Drill & Injection Wood Protection Treatment	998531	1 Treatment	1500.00	—	18%	1770.00

HSN/SAC	Taxable Value (₹)	CGST (₹)	SGST (₹)	Total Tax (₹)
998531	4000.00	360.00	360.00	720.00

Amount in Words:

Rupees Four Thousand Seven Hundred Twenty Only

💳 Bank Account & UPI Details:

Bank Name:HDFC BankA/C Number:50200012345678IFSC Code:HDFC0001234UPI ID:sharmapest@upi

Item Total (Before GST):₹4,000.00

Central GST (CGST):₹360.00

State GST (SGST):₹360.00

Total Bill Amount:₹4,720.00

Standard Terms & Conditions:

Goods once sold or services once rendered cannot be returned without prior written approval.
Subject to local state jurisdiction. Payment due within specified due date.
This is a computer-generated tax invoice verified under Indian GST rules.

For Sharma Pest Control Services Private Limited

Authorized Signatory

Authorized Service Coverage: Delhi NCR • Noida • Gurugram • Ghaziabad • Faridabad

Complete Feature Suite

All 12 Built-In Modules in 4 Everyday Buckets

Organized exactly like your physical shop counter or contractor desk. No confusing accounting terms—just simple everyday business English.

Daily Billing

Module #1

Home & Summary

Dashboard

See total sales before GST, money collected, money left to collect, late bills, and shop expenses at a single glance.

Money Left to Collect and Late Payments highlighted with clear colored badges
Total Bills Made broken down into Pre-Tax Sales and Total GST
Pending Customer List with 1-click [Take Pay] and [WhatsApp Reminder] buttons
Filter totals by This Month, Last Month, This Quarter, or Full Year

Module #2

Bills

Invoices

5-step paper-style bill maker supporting Regular GST Bills, Service Bills with property & visit details, Credit/Debit notes, and rough drafts.

Dedicated Service Work Box (Property Type, Area, Visits, Staff, Warranty)
Intra-state (CGST + SGST) vs Inter-state (IGST) automatic detection
Locked snapshots on final bills ensure future price changes never modify old bills
1-Click WhatsApp share link generator with polite pre-written message

Module #3

Price Quotes

Estimates

Send clear work estimates with Scope of Work, terms, and Valid Until dates. Convert to a final bill with one click when approved.

Scope of Work description and terms highlight block
Valid Until Date banner to avoid disputes on stale quotes
1-Click [Make Final Bill from this Quote] copies all items without retyping
Status tracking: Draft, Sent, Accepted, Turned to Bill, Expired

Module #4

Money Received

Payments & Receipts

Record full or partial customer payments via UPI, Cash, Bank Transfer, or Cheque with instant printable Payment Receipt vouchers.

Record partial payments with automatic remaining balance recalculation
Quick-fill [Full Amount] and [Half Amount] chips for faster entry
Print or download official Customer Payment Receipt vouchers
Safe [Cancel Wrong Entry] button to reverse a mistakenly recorded payment

My Saved Lists

Module #5

Customers

B2B & B2C Directory

Save customer phone numbers, GST numbers, and billing/shipping addresses with duplicate detection and a complete customer ledger passbook.

Non-destructive warning if a duplicate phone number or GSTIN is entered
Customer Passbook view showing every bill, payment, and balance for that person
One-click WhatsApp chat launch directly from the customer card
Filter by B2B (with GSTIN), B2C, or Unregistered customers

Module #6

Items & Services List

Catalogue

Store regular services and products with HSN/SAC codes, standard units (Visit, Sq.Ft, Nos, Month), default rates, and tax slabs.

Save HSN/SAC codes once and have them auto-fill on every bill
Support for service units (Visit, Sq.Ft, Hours) and trade units (Pieces, Kg, Meters)
Set default GST slab (0%, 5%, 12%, 18%, 28%) per item
Instant search and filter by name, category, or HSN code

More Business Tools

Module #7

Shop / Business Expenses

Expense Tracker

Track money spent on shop rent, raw materials, technician wages, fuel, and marketing with monthly summaries and Excel export.

Preset business categories (Rent, Materials, Wages, Fuel, Office, Marketing)
Monthly expense bar breakdown comparing income against operational costs
Attach payment reference number and vendor receipt details
Export CA-ready expense sheets in formula-safe CSV format

Module #8

Repeat Bills

AMC & Monthly Auto-Billing

Set up automated repeat bills for monthly retainers, AMC contracts, or rent that generate cleanly when Chrome opens.

Flexible repeat cycles: Weekly, Monthly, Quarterly, or Yearly
Idempotent occurrence keys ensure zero duplicate bills if Chrome was closed
Automatic due date and notification when bills are generated
Pause, resume, or cancel repeat schedules at any time

Module #9

Reports & Excel (CSV) Download

CA-Ready Reports

Download clean, formula-injection-safe CSV files for all bills, HSN tax summaries, payments collected, and customer outstanding balances.

CWE-1236 Formula Injection Defense automatically cleans cells starting with =, +, -, @
HSN-wise GST summary reports ready for GSTR-1 and GSTR-3B filing
Customer Balances report showing who owes what across your entire business
Full monthly sales and tax collection export in standard CSV format

Setup, Bill Design & Data Backup

Module #10

My Businesses / Shops

Multi-Business Profiles

Run multiple firms, shops, or service brands from one browser. Switch businesses in one click with 100% separate bill numbers and records.

Switch between multiple businesses with one click from the top bar
Separate bill prefixes (e.g. INV-2026-, RHE-, APX-) and numbering sequences
Independent logos, GSTINs, bank accounts, UPI IDs, and terms per company
100% local database isolation so accounts never cross-contaminate

Module #11

Bill Design & Colors

Template Studio

Pick from 6 A4 paper designs, 8 brand colors, 4 clean typography styles, logo sizing, and 7 simple show/hide checkboxes.

6 Built-in A4 templates (Service Contractor, Standard GST, Retail, Quotation, Receipt, Return)
8 Curated brand colors (Classic Blue, Forest Green, Deep Maroon, Charcoal, Teal, etc.)
7 Instant show/hide checkboxes for HSN codes, discounts, service box, and UPI info
Direct browser printing with clean A4 print styles and zero visual clutter

Module #12

Settings & Data Backup

Local Storage & Backup

Monitor local storage usage, download a complete encrypted-safe .json backup file to your computer, and restore data with dry-run verification.

1-Click full backup export (.json) to your laptop or pen drive
Dry-run restore preview showing count of businesses, customers, and bills before merging
Safety choice between Safe Merge and Full Replace on restore
Visual storage meter showing exact browser space used

Direct Comparison

Why Regular Businesses Switch to EasyBill

See how EasyBill stacks up against traditional paper receipt books, fragile Excel sheets, and overpriced cloud billing software.

Everyday Billing Need	1. Paper Bill Book / Excel	2. Typical Cloud Billing Apps	3. EasyBill (Chrome Extension)
Works When Internet is Down	Yes, but manual handwriting or prone to Excel formula breakage.	No. Page freezes or fails to load; billing stops completely.	100% Offline. Makes bills, calculates GST, and saves A4 PDFs with zero internet.
Monthly / Yearly Subscription Fee	Cost of physical receipt books or Microsoft 365 license.	₹4,000 to ₹18,000 per year per shop, increasing every renewal.	₹0 Forever. Free local application for Indian MSMEs and contractors.
Works Next to WhatsApp Web in Chrome	No. Must switch between phone and paper desk.	No. Requires juggling browser tabs or copying back and forth.	Compact 360px Chrome Side Panel docks right alongside your WhatsApp customer chat.
Language & Screen Simplicity	Manual text with no automated calculations.	Complicated accounting jargon (Journals, Ledgers, Debits, Credits).	Everyday Plain Business English (Bills, Price Quotes, Money Left to Collect).
Dedicated Service Contractor Details	Must write notes in margin by hand.	Only built for product shops; no fields for visits, premises, or warranty.	Built-in Service Work Box (Property Type, Area, Treatment, Visits, Staff, Warranty).
Multiple Businesses / Shops Supported	Multiple paper books cluttering your counter.	Requires purchasing separate accounts or expensive enterprise add-ons.	Unlimited isolated businesses with separate bill prefixes in one top-bar click.
Automatic CGST/SGST vs IGST & Amount in Words	Manual calculation prone to math errors and audit penalties.	Calculates online; fails when disconnected.	Deterministic Decimal.js engine calculates tax and converts Rupees to Words offline.
Historical Bill Protection (Price Change Safety)	Carbon copies can fade or get misplaced.	Changing an item catalogue price can accidentally mutate past bills.	Immutable snapshots freeze finalized bills forever; past records never mutate.
1-Click Quote to Final Bill Conversion	Must rewrite entire estimate by hand onto a fresh bill.	Multi-step complex workflow requiring approval chains.	1-Click [Make Final Bill from this Quote] transfers all items instantly.
Customer Data Privacy & Security	Vulnerable to physical loss, water damage, or theft.	Your customer phone numbers and sales data sit on third-party cloud servers.	100% Local IndexedDB storage on your computer with 1-click JSON backup export.

Made for Real Indian Workflows

Built for How Indian Businesses Actually Operate

From local pest control technicians and hardware merchants to high-growth agencies.

Service & Maintenance Contractors

Pest Control, HVAC/AC Servicing, CCTV, Electrical & Civil Repair, Deep Cleaning

Challenge: Service contractors need to record property type, square footage, assigned technician, scheduled visits (e.g. Visit 1 of 4), and service warranty dates on the customer bill. Typical retail billing software lacks these fields completely.

How EasyBill Solves It:

Dedicated Service Work Box on the SERVICE_PRO template captures property type, area, treatment, visits, and staff name.
Customers clearly see how many scheduled visits remain under their 1-year or 6-month contract.
Repeat Bills automatically generate monthly or annual AMC renewal bills when Chrome opens.
Footer displays your authorized service cities and local branch coverage.

Sample Bill Prefix:INV-2026-0024

Retail & Wholesale Shopkeepers

Hardware, Electricals, Sanitaryware, Auto Parts, Building Materials & Traders

Challenge: Counter billing requires rapid item addition with saved HSN codes, quantity units (Pieces, Meters, Boxes, Kg), cash and UPI settlement, and instant A4 or receipt printing during shop rush hours.

How EasyBill Solves It:

Saved Items catalogue auto-fills standard HSN/SAC codes and default tax slabs in seconds.
Quick payment buttons with immediate Customer Payment Receipt printing.
Supports both B2B commercial bills (with buyer and consignee GSTIN) and quick B2C retail slips.
Optional 1-click round-off to the nearest Rupee simplifies cash change at the checkout counter.

Sample Bill Prefix:RHE-26-0108

Agencies, Consultants & Multi-Brand Founders

Digital Agencies, Freelancers, Architects, Interior Designers & Multi-Firm Owners

Challenge: Agencies need to send professional Price Quotes with a detailed Scope of Work before starting a project, and often juggle 2 or 3 separate brand entities or firms.

How EasyBill Solves It:

Create polished Price Quotes with Validity Dates, Terms, and Scope of Work description.
Convert accepted estimates into final GST bills with 1-click [Make Final Bill from this Quote].
Multi-business switcher lets you manage multiple separate firm names, GSTINs, and bank accounts from one browser.
Fast 2-step WhatsApp sharing to dispatch estimates directly to client WhatsApp chats.

Sample Bill Prefix:APX-2026-0042

Official 38 Indian GST States & Union Territories (01 to 38)

Search any state name or 2-digit code to see how intra-state and inter-state GST is automatically detected.

Delhi (07) • Union Territory

Same state billing (Intra-State): CGST 9% + SGST 9% applies equally.

Valid GSTIN Prefix: 07AAAAA...

Code	State / Union Territory Name	Type	Zone
01	Jammu and Kashmir	Union Territory	North
02	Himachal Pradesh	State	North
03	Punjab	State	North
04	Chandigarh	Union Territory	North
05	Uttarakhand	State	North
06	Haryana	State	North
07	Delhi	Union Territory	North
08	Rajasthan	State	North
09	Uttar Pradesh	State	North
10	Bihar	State	East
11	Sikkim	State	North-East
12	Arunachal Pradesh	State	North-East
13	Nagaland	State	North-East
14	Manipur	State	North-East
15	Mizoram	State	North-East
16	Tripura	State	North-East
17	Meghalaya	State	North-East
18	Assam	State	North-East
19	West Bengal	State	East
20	Jharkhand	State	East
21	Odisha	State	East
22	Chhattisgarh	State	Central
23	Madhya Pradesh	State	Central
24	Gujarat	State	West
26	Dadra and Nagar Haveli and Daman and Diu	Union Territory	West
27	Maharashtra	State	West
29	Karnataka	State	South
30	Goa	State	West
31	Lakshadweep	Union Territory	South
32	Kerala	State	South
33	Tamil Nadu	State	South
34	Puducherry	Union Territory	South
35	Andaman and Nicobar Islands	Union Territory	South
36	Telangana	State	South
37	Andhra Pradesh	State	South
38	Ladakh	Union Territory	North

Privacy, Security & Transparency

Your Financial Data Never Leaves Your Computer

EasyBill runs 100% locally on your machine with zero cloud servers, zero tracking scripts, and minimal Chrome Manifest V3 permissions.

Chrome Manifest V3 Permissions Transparency

Verified Manifest V3 Compliant

Permission Name	Status	Feature Purpose	Plain English Explanation
storage	Requested	Local Settings & Active State	Saves your active business profile, UI view preferences, and bill numbering sequences locally on your machine.
sidePanel	Requested	360px WhatsApp Companion Dock	Allows EasyBill to open smoothly in Chrome’s built-in Side Panel so you can bill customers next to WhatsApp Web.
alarms	Requested	Repeat Bills (AMC) Due Check	Periodically wakes the local extension background worker while Chrome is open to verify if any monthly or annual repeat bills are due.
unlimitedStorage	Requested	Local Database Size Quota	Removes the default 50MB browser storage limit so you can safely store years of customer invoices, items, and company logos.
<all_urls> / host_permissions	ZERO Access	Zero Access to Webpages	NEVER requested. EasyBill cannot read, intercept, or access any website or tab you visit.
content_scripts	ZERO Access	Zero DOM Injection	NEVER requested. No code is injected into third-party web pages, social media, or banking sites.
history & tabs	ZERO Access	Zero Browsing History Access	NEVER requested. The extension has zero ability to view your browsing history or open tabs.
Remote API / Telemetry Servers	ZERO Access	Zero Cloud Servers	NEVER requested. Zero analytics, zero ad trackers, zero external telemetry.

Mod-36 GSTIN Checksum Tester

Type or test any 15-character Indian GSTIN to see the statutory format and mathematical Mod-36 checksum verification:

Statutory Check Passed

Valid GSTIN! State Code: 07, PAN: AAAAA0000A, Checksum: 4 (Verified via Mod-36 algorithm).

CWE-1236 CSV Injection Defense

When downloading CSV reports, cells starting with =, +, -, @ are escaped with a single quote to prevent spreadsheet code execution:

RFC-4180 Sanitized Output:

"'=CMD|' /C calc'!A0"

Verifiable Technical & Financial Specification Sheet

Extension Standard:Google Chrome Manifest V3 (Service Worker Architecture)

Dual Viewports:Compact 360px Side Panel + Expansive 1440px Desktop Dashboard

Database Engine:Local IndexedDB (13 ACID Tables via Dexie.js) + BroadcastChannel Live Sync

Arithmetic Precision:Decimal.js (Fixed-point arithmetic, ROUND_HALF_UP, zero IEEE-754 drift)

Statutory GST Slabs:0%, 0.1%, 0.25%, 1.5%, 3%, 5%, 6%, 7.5%, 12%, 18%, 28% + Exempt / Non-GST

Supported States & UTs:All 38 Official 2-Digit Indian GST State Codes (01 Jammu & Kashmir to 38 Ladakh)

Built-In A4 Templates:6 Printable Vector PDF Templates (210mm × 297mm) with Unicode ₹ Font

Security & Sanitization:Zero host_permissions, Mod-36 GSTIN Checksum, CWE-1236 CSV Formula Defense

AEO-Optimized Answers

Frequently Asked Questions

Every answer begins with a concise 40–60 word factual capsule crafted for direct answers and Google AI Overviews, followed by key implementation details.

Yes, EasyBill functions 100% offline without an internet connection. All business profiles, item catalogues, customer ledgers, and finalized bills are stored locally inside your Chrome browser using IndexedDB. You can create invoices, calculate taxes, download A4 PDFs, and print receipts anytime during internet outages.

No login, password, or cloud server connection is ever required to operate EasyBill.
All customer data and financial numbers stay strictly on your local computer hard drive.
PDF generation runs completely client-side in your browser using local vector rendering.
When your shop or contractor site loses internet, your billing speed is never interrupted.

Search & AI Engine Readiness (SEO • AEO • GEO • LLMs.txt)

Inspect Live Machine-Readable Schemas & AI Directives

Verify our verified JSON-LD `@graph`, open the `/llms.txt` and `/llms-full.txt` standards, and inspect crawler directives for GPTBot, ClaudeBot, and Perplexity.

3-Step Quick Start

Start Billing in 60 Seconds

No registration forms, no cloud passwords, and no credit card required. Works instantly in Google Chrome on Windows, Mac, Linux, and Chromebooks.

Add to Google Chrome

Click Add to Chrome from the official Chrome Web Store, or load unpacked in chrome://extensions in Developer Mode.

Zero Host Permissions Required

1-Minute Welcome Setup

Type your Shop or Business Name and select your State. GSTIN, logo, and bank account details are optional and can be added or updated anytime in Settings.

No Account / Login Needed

Make & Share First Bill

Click [+ New Bill] in the 360px Side Panel while chatting with customers on WhatsApp, or open the Full Screen Bill Book to print A4 paper PDFs.

Ready to Print in 60 Seconds

Get EasyBill for Google Chrome Today

Free offline billing for Indian shopkeepers, service contractors, and small business owners.

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Compatible with Windows 10/11, macOS, Linux, and ChromeOS • Chrome Version 116+