Resources
Free tools and plain answers.
Tools, guides, templates and a glossary for growing businesses, plus India GST and payroll libraries. Free, no sign-up.
14 free tools
Work it out in seconds.
Each tool answers as you type, then shows the formula, a worked example and the official source. Tools marked India follow Indian rules.
- GST For India
GST calculator
Example · ₹10,000 at 18%, same state ₹11,800.00 - GST For India
HSN and SAC finder
Example · Cement, HSN 2523 18% - GST For India
E-way bill validity calculator
Example · 450 km, generated 1 Nov 2026 4 Nov 2026, midnight - GST For India
GST late fee calculator
Example · GSTR-3B filed 10 days late ₹500 fee - Payroll For India
Salary calculator, CTC to in-hand
Example · CTC ₹12 lakh, new regime, in-hand ₹94,000 a month - Payroll For India
PF and ESI calculator
Example · Employee ESI on ₹20,000 gross ₹150 - Loans and assets
EMI calculator
Example · ₹5 lakh at 10.5% for 36 months ₹16,251.22 - 14 All free tools GST, e-invoice, PF, ESI and depreciation for India, plus loan EMIs and reorder points for any business. Browse them
15 guides
Guides that cite the law.
Written for owners and accountants. The GST and payroll guides cover Indian law; each names its official sources and the date we checked them.
India GST guides
For businesses in India: place of supply, rates, returns, e-invoicing, e-way bills and reverse charge.
- Place of supply under GST8 min
- GST rates in India6 min
- GSTR-1 and GSTR-3B9 min
- E-invoicing under GST7 min
- E-way bill rules7 min
- Reverse charge under GST8 min
India payroll compliance
For employers in India: PF, ESI, professional tax and TDS on salary, with due dates.
- PF contribution rules7 min
- ESI rules for employers5 min
- Professional tax on salaries6 min
- TDS on salary, tax year 2026-278 min
Buyer guides
For any business: choosing business software, what it costs, and moving your data.
- How to choose ERP software in India9 min
- What ERP costs in India7 min
- Cloud or self-hosted ERP?6 min
- Tally migration checklist7 min
- ERP implementation checklist7 min
7 templates
Formats you can print today.
Invoice, challan, order and payslip formats laid out for India’s GST and labour rules. CSV or printable A4, no e-mail needed.
- Quotation format with GSTPrices, GST, validity and terms on one page your customer can sign off. CSVA4
- Proforma invoice formatAn advance bill for payment or approval, clearly marked as not a tax invoice. CSVA4
- GST tax invoice formatEvery field rule 46 asks for, in a CSV layout and a printable A4 page. CSVA4
- GST credit note formatFor goods returned, price cuts or excess tax, with the fields rule 53 asks for. CSVA4
- Purchase order formatWhat you are buying, at what price, by when, and how you will pay. CSVA4
- Delivery challan format (rule 55)For goods that move without a tax invoice, such as job work or goods on approval. CSVA4
- Payslip format (Form V wage slip)The wage slip the Code on Wages asks for, issued on or before payday. CSVA4
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