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Lists the official rate tables each calculator uses (free, no credits).

Calculate statutory Tax Deducted at Source (TDS) under the Indian Income-tax Act, 1961 (AY 2025-26 / FY 2024-25).

Calculate statutory Tax Collected at Source (TCS) under Section 206C of the Indian Income-tax Act, 1961 (AY 2025-26 / FY 2024-25).

Calculate Indian GST on a supply under the regular scheme: CGST + SGST for an intra-state supply, IGST for an inter-state supply, export or SEZ supply, with optional compensation cess, reverse charge and input tax credit eligibility (Sections 9 and 16-17, CGST Act 2017; Section 5, IGST Act 2017).

Calculate statutory GST quarterly tax liabilities under the Composition Scheme (Section 10 of CGST Act).

Calculate Indian advance tax instalments and the interest for late or short payment (Sections 234A, 234B and 234C; sections 207-211).

Compute Indian personal income tax for the tax year in force on as_of_date (Income-tax Act, 2025 from tax year 2026-27; the 1961 Act before), comparing the new regime (standard deduction and Section 87A rebate) with the old regime (Chapter VI-A deductions such as 80C and 80D), and naming the lower one.

Simulate Public Provident Fund (PPF) 15-year statutory compound wealth accumulation under Ministry of Finance notifications.

Simulate Sukanya Samriddhi Yojana (SSY) sovereign small savings scheme for girl child education and marriage under Government of India statutory guidelines.

Calculate Bank and Corporate Fixed Deposit (FD) maturity amount and interest returns.

Calculate Gold and Silver commodity valuation, hallmarking purity adjustments (24K, 22K, 18K, 14K), statutory GST (3%), making charges, and Indian regional unit conversions (Tola, Sovereign, Sovereign/Pavan, Grams, Troy Ounces).

Calculate tax liabilities, statutory benefits, and net take-home cash between W-2 salaried employment and 1099 independent contractor billing, solving the exact breakeven billing rate ($/hr).

Evaluate S-Corporation tax election viability by calculating reasonable officer salary split, SECA/FICA payroll tax shield, administrative overhead costs, and net tax savings under IRS Rev.

Maximize tax-deferred retirement sheltering by comparing Solo 401(k) vs.

Quantify cross-border payment fee drag and calculate net landed local currency across 6 global payout rails (Wise, Deel, Stripe, Payoneer, PayPal, and SWIFT wire) against mid-market FX benchmark rates.

Solve the exact minimum billable hourly rate required to achieve a target net spendable cash income, factoring in unpaid weeks, non-billable administrative drag, deductible overhead, health insurance, and SECA self-employment taxes.

Calculate monthly US mortgage payments broken down into PITI (Principal, Interest, Property Taxes, Homeowners Insurance, and Private Mortgage Insurance) along with full 30-year amortization schedule.

Calculate European Value Added Tax (VAT) and global sales taxes in either Add Mode (Net price to Gross price) or Remove Mode (Gross price to Net price) with statutory rate verification.

Standard precision: this calculator uses ordinary floating-point arithmetic, keeps no dated table of official rates, and has not yet passed our full reference-test suite.

Calculate Systematic Investment Plan (SIP) mutual fund maturity wealth with optional annual percentage step-up (top-up) for compounding wealth growth.

Calculate reducing-balance monthly Equated Monthly Installment (EMI), total interest payable, and amortization schedule for home, auto, or personal loans.

Calculate multi-provider LLM API inference token costs, prompt caching economics (up to 95% discount), batch API savings (50%), and cross-model cost disparity multipliers across frontier and high-efficiency models (Anthropic Claude, OpenAI GPT, Google Gemini, DeepSeek).

Model early-stage startup cash runway calendar exhaustion date, Post-Money SAFE note conversion cap dilution, and Series A unallocated option pool shuffle waterfall.

Standard precision: this calculator uses ordinary floating-point arithmetic, keeps no dated table of official rates, and has not yet passed our full reference-test suite.

Track IRS Form 2555 Foreign Earned Income Exclusion (FEIE) Physical Presence Test eligibility (330 full foreign days in rolling 365 days), statutory exclusion cap ($130,000 for 2025), and US sticky domicile audit risks (CA, NY, VA, SC).

Analyze tiered AWS/GCP public cloud internet data transfer egress pricing versus Cloudflare Zero-Egress Bandwidth Alliance and edge caching proxies, quantifying monthly and annual infrastructure cost savings.

Standard precision: this calculator uses ordinary floating-point arithmetic, keeps no dated table of official rates, and has not yet passed our full reference-test suite.

Calculate Compound Annual Growth Rate (CAGR), real inflation-adjusted purchasing power growth (Fisher equation), and exact investment doubling time (Rule of 72 exact logarithmic solution).

Standard precision: this calculator uses ordinary floating-point arithmetic, keeps no dated table of official rates, and has not yet passed our full reference-test suite.

Convert Indian regional and universal land measurement units under the Legal Metrology Act, 2009 and State Land Revenue Codes (UP, Punjab, Haryana, West Bengal, Gujarat, Bihar, Assam, HP, MP, Rajasthan).

Calculates monthly principal, interest, taxes, insurance, and automated PMI with full amortization schedule.

Computes closed-form analytical Black-Scholes-Merton option prices and Greeks.

Calculates maximum deflection, maximum bending moment, and extreme fiber stress for simply supported beams.

Search across TrueCalci's 28 statutorily hardened computation engines and 10 analytical formulas.

Calculates tax, benefits, and cash-flow parity between W-2 salaried employment and 1099 independent contractor billing, solving the exact breakeven hourly rate.