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Free Business Tools for Indian SMBs

10 powerful tools — completely free, no login required. Built specifically for Indian GST-registered businesses.

All Free Tools

No signup. No login. Just open and use. 100% free, always.

No Login Required Free Forever Works on Mobile

GST Calculator

Calculate GST on any amount. Add GST to a price or remove it. Get CGST + SGST (intrastate) or IGST (interstate) breakdown instantly.

Add GSTRemove GSTCGST/SGST splitIGSTAll GST ratesInstant results

Invoice Calculator

Add multiple items, set GST rates per item, apply discount, and see the complete invoice breakdown — taxable amount, taxes, and final total.

Multi-itemPer-item GSTDiscountSubtotalGST breakupGrand total

GSTIN Validator

Validate any GSTIN number instantly. Checks format validity and decodes embedded information like state code, PAN, entity type, and more.

Format checkState decodePAN extractEntity typeRegistration yearCheck digit

HSN/SAC Code Finder

Search for HSN codes by product name or SAC codes by service name. Find the right code with applicable GST rate for your invoices.

HSN searchSAC searchGST rateCategory filterExport listCommon codes

Quick Bill Generator

Create a professional bill or invoice instantly without login. Enter your details, add items, and print or download as PDF. Perfect for quick billing.

No loginPDF downloadPrint readyGST invoiceCustom logoProfessional look

TDS Calculator

Calculate Tax Deducted at Source (TDS) on salary, rent, professional fees, contractor payments. Covers all major sections with surcharge & cess.

Sec 192 SalarySec 194C ContractorSec 194I RentSec 194J ProfessionalSurcharge & CessEffective rate

EMI Calculator

Calculate Loan EMI (Equated Monthly Installment) for home loan, car loan, personal loan. Shows amortization schedule with interest & principal breakup.

Home loanCar loanPersonal loanInterest breakupAmortizationPrepayment

PDF Merge

Combine multiple PDF files into one. Drag & drop, reorder pages, then download. 100% browser-based — your files never leave your device. No upload.

Drag & dropReorder pagesNo uploadNo accountAny sizeInstant download

QR Code Generator

Generate QR codes for URLs, UPI payments, WhatsApp, phone, email, or Wi-Fi. Choose colors, download as PNG. Perfect for business cards & invoices.

URL QRUPI Payment QRWhatsApp QRWi-Fi QRCustom colorsPNG download

Salary Calculator

Calculate take-home salary from CTC. Breakdown of Basic, HRA, PF, Professional Tax, TDS. Supports New & Old tax regimes for FY 2024-25.

CTC to In-HandHRA exemptionPF deductionTDS calculationNew & Old regimeMonthly & Annual

Full Billing Software

Want more? Create a free account and get access to full GST invoicing, inventory management, customer ledger, 16 templates, and more.

16 templatesGST reportsInventoryMulti-userPDF exportFree plan

Why use RCS Book Tools?

No Login Needed

All tools work without creating an account.

Mobile Friendly

Works perfectly on phone, tablet, and desktop.

Instant Results

Real-time calculations as you type.

100% Free

Always free, no hidden charges ever.

Need full GST billing software?

Create a free account for complete invoicing, inventory, customer management, 16 templates, and business reports.

Get Full Software Free
 
RCS Book AI Assistant
Online — GST & Billing Expert
👋 Hi! I'm your GST & billing assistant.

Ask me about:
• GST rates & HSN codes
• Invoice rules & formats
• GSTR filing deadlines
• ITC, E-Invoice, E-Way Bill
• RCS Book features

Can't find your answer? I'll connect you to WhatsApp support 💬
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