Free Accounting Tools & Calculators by Region

Free tools for your region — GST, TDS, quarterly tax, cash flow, sales tax nexus, 1099 compliance, profit benchmarks, and more. No signup, no email gate, no usage limits. Every tool runs in your browser, so the numbers you enter never leave your device.

HelloBooks publishes more than twenty calculators and compliance checkers covering Indian tax (GST, TDS, ITR, NGO 12A/80G), United States federal and state tax (IRS Section 179, ASC 606, sales tax nexus, 1099, IFTA, solar ITC), and cross-border operational metrics (cash flow runway, working capital, switching savings, AIA billing for construction). The page below detects your region from your IP and shows region-appropriate tools first — but every calculator stays reachable from the lists further down regardless of where you visit from.

India

GST, TDS, ITR, and India-specific compliance calculators for businesses, CAs, and finance teams.

United States

Federal and state tax, 1099, IRS Section 179, and sales-tax-nexus calculators for US small businesses, freelancers, and CPAs.

Cross-border & operational

Cash flow, working capital, and switching-cost calculators that apply to small businesses in any jurisdiction.

How we build these calculators

Every calculator is built by the HelloBooks product team in consultation with chartered accountants and CPAs who use them with their own clients. India tax tools apply current GST slabs, TDS sections, and ITR schedules under the Income Tax Act, 1961 and CGST/SGST Acts, 2017. US tools apply current IRS rules — Section 179 limits for tax year 2025, ASC 606 revenue-recognition guidance, federal quarterly estimate thresholds, and state-by-state sales tax nexus rules.

Outputs are intended for planning, quick estimates, and validating an accountant's work — not for filing returns. If you need a system that keeps the rules synced, generates the return automatically, and stores the audit trail, that's what HelloBooks bookkeeping software does for the same business owners the calculators are built for. Calculators stay free; the full-stack bookkeeping product is a separate paid product.

Frequently asked questions

Are these accounting tools really free?

Yes. Every tool on this page is free to use with no signup, no email gate, and no usage limits. They run entirely in your browser — your numbers never leave your device. The tools are funded by HelloBooks, our AI bookkeeping software, which you can try separately if you want to go from one-off calculations to a fully automated bookkeeping workflow.

Which calculators apply to my country?

Tools are tagged India, United States, or cross-border. The page detects your region from your IP and surfaces region-appropriate tools first, but every tool is reachable from the lists above regardless of where you are. India tools (GST, TDS, ITR) assume Indian tax law; US tools assume IRS rules and federal/state structures.

How accurate are the numbers?

The calculators apply current rates and rules as of the most recent tax-year update for each jurisdiction (FY 2025–26 for India, tax year 2025 for the US). They are designed for planning and quick estimates — not for filing. For actual filings, use HelloBooks bookkeeping software, which keeps tax rules synced and audit-ready, or check with your accountant.

Can I embed these tools on my own site?

Embeds are not currently available, but we publish open APIs for several of the calculators. If you'd like to embed one on a client portal, partner blog, or internal tool, contact us at hello@merufintech.com and we'll share documentation.

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