Free GST & Income Tax Calculators
Free GST and income tax calculators, plus FEMA, company law and labour law tools: a library of 62 calculators and checkers for general informational reference only.
Disclaimer: These tools are provided for general informational reference. They are simplified and may not reflect every special provision, surcharge or recent notification. They do not constitute professional advice. For formal computation on any specific matter, please consult the firm.
The tools at a glance
What tools are on this page?
This page lists 62 free tools in five categories: GST and indirect tax, income tax, FEMA and foreign exchange, company law and ROC, and labour and payroll. They include an income tax calculator, GST rate finder, TDS calculator, due date calendars, and PF, ESI and gratuity calculators.
Who publishes these calculators?
The calculators are published by SKAG and Associates, a Chartered Accountancy firm in Mahavir Enclave, New Delhi, whose Proprietor is CA Gaurav Singh (ICAI M.No. 539050). They are free to use, reviewed for FY 2025-26 and Tax Year 2026-27, and provided as general information only.
Can I rely on the results for filing?
The tools are simplified and may not reflect every special provision, surcharge or recent notification, so results are estimates for general reference, not professional advice. For a formal computation, working papers or representation on a specific matter, contact the firm for an engagement.
Five focused practice areas
Each category collects related calculators in one place.
GST & Indirect Tax
Tools for GST registration, return filing, ITC, RCM and rate lookup.
Explore Tools →Income Tax
Direct tax calculators for individuals, professionals and businesses.
Explore Tools →FEMA & Foreign Exchange
Tools for cross-border remittances, FDI, ECB, NRI investments and FEMA compliance.
Explore Tools →Company Law & ROC
Tools for incorporation, MCA filings, ROC compliance and corporate governance.
Explore Tools →Labour & Payroll
Calculators for wages, gratuity, PF, ESI, bonus and labour law compliance.
Explore Tools →Complete tool index
Direct links to every calculator, organised by category. Use Ctrl+F to find a specific tool.
GST & Indirect Tax View category →
GST Rate Finder & HSN/SAC Lookup
Search GST rates by HSN or SAC code, or by goods/service name.
GST Invoice Generator
Generate a compliant GST invoice with CGST/SGST/IGST split — download as PDF.
GST Return Due Date Calendar
Monthly, quarterly and annual due dates — GSTR-1, 3B, 9, 9C and CMP-08.
GST Input Tax Credit (ITC) Calculator
Calculate eligible ITC and identify blocked credits under Section 17(5).
GST Liability Calculator
Compute net GST payable after ITC adjustment — intra/inter-state scenarios.
Reverse Charge Mechanism Checker
Identify whether RCM applies to a specific transaction or supplier.
GST Late Fee & Interest Calculator
Compute late fees and interest under Sec 47 & 50 for delayed filings.
GST Registration Eligibility Checker
Check whether you must register under GST based on turnover and supply type.
GSTIN & PAN Format Validator
Check a GSTIN or PAN offline: state code, embedded PAN, entity type and the mod-36 check digit.
E-Invoice & E-Way Bill Checker
Check whether a supply needs an e-invoice (IRN) and a movement of goods needs an e-way bill.
Income Tax View category →
Income Tax Calculator
Compute tax under New and Old regime — FY 2025-26 (AY 2026-27) and Tax Year 2026-27.
Advance Tax & Interest
Quarterly instalments under Section 211 and 234C interest on instalments already due.
TDS Calculator
TDS on salary, rent, professional fees, contracts and more.
HRA Exemption Calculator
House Rent Allowance exemption under Section 10(13A).
80C Deduction Planner
Plan investments to use the ₹1.5 lakh limit — track tax saved.
Capital Gains Tax Calculator
Short-term and long-term gains on equity, property, mutual funds.
New vs Old Regime Comparison
Side-by-side comparison to choose the right tax regime.
Income Tax Due Date Calendar
ITR, advance tax, TDS and audit due dates for the year.
Late Fee & Interest (234A/B/C/F)
Section 234F late-filing fee and 234A/B/C interest computation.
Form 15G/15H Eligibility
Check if you can submit Form 15G/15H (Form 121 from Tax Year 2026-27) to avoid TDS.
TDS on Property Calculator (194-IA)
1% TDS on buying property of ₹50 lakh or more — Section 194-IA / Section 393, Form 26QB / Form 141.
Presumptive Tax Calculator (44AD/44ADA)
Presumptive income and tax for small businesses and professionals — Section 44AD/44ADA and Section 58.
ITR Form Selector
Answer a few questions to find whether ITR-1, 2, 3 or 4 fits your income for FY 2025-26 (AY 2026-27).
Take-Home Salary Calculator
Monthly in-hand pay from CTC after employee PF, professional tax and income tax (new or old regime).
MSME Payment 43B(h) Tracker
Check which dues to micro and small enterprises are disallowed for the year under Section 43B(h) / Section 37.
TDS Interest & Late Fee Calculator
Interest for late TDS deduction or payment, the ₹200 a day late fee and penalty exposure — Section 201(1A), 234E / 398, 427.
ITR-U Updated Return Calculator
Additional tax of 25% to 70% on an updated return by filing date, with the eligibility checks — Section 139(8A) / 263(6).
Residential Status Checker (NRI / RNOR)
Check ROR, RNOR or NR status under Section 6 from days in India, the 120-day rule and deemed residence.
Delhi Property Stamp Duty Calculator
Stamp duty, transfer duty and registration fee on buying property in Delhi, on the higher of price and circle-rate value.
FEMA & Foreign Exchange View category →
LRS Limit Tracker
Liberalised Remittance Scheme — track your USD 2,50,000 annual limit.
Foreign Investment Eligibility
Check FDI permissibility, route (automatic / approval) and sectoral caps.
ECB Compliance Calculator
External Commercial Borrowing — borrowing limit and minimum average maturity (2026 framework).
NRI / OCI Investment Tool
Permissible investments in India for NRIs and OCIs with tax implications.
Foreign Asset Disclosure
Schedule FA disclosure requirements under FEMA and Income Tax.
Export Proceeds Realisation
Track 9-month export realisation timelines, alerts for overdue invoices.
Foreign Currency Conversion
INR-foreign currency converter at a rate you enter; illustrative sample rates.
FEMA Penalty & Compounding
Estimate maximum FEMA penalty and Late Submission Fee; compounding overview.
Repatriation Requirement Checker
Rules for repatriating sale proceeds, dividends and interest from India.
FEMA Due Date Calendar
FC-GPR, FC-TRS, ECB-2, APR and SMF filing deadlines.
Company Law & ROC View category →
Company Incorporation Cost
Estimated MCA fees, stamp duty and professional charges for setting up.
DIN / DSC Eligibility Checker
Check whether a person qualifies for DIN and DSC requirements.
ROC Filing Due Date Calendar
MGT-7, AOC-4, DIR-3 KYC, DPT-3, MSME-1 and event-based filings.
Company Compliance Health Check
Quick diagnostic of MCA compliance status with a compliance score.
MCA Penalty & Additional Fee
Calculate late fees and additional fees for delayed MCA form filings.
Share Capital & Stamp Duty
Stamp duty on share issuance and transfer — state-wise.
Small Company Eligibility
Check “small company” status and compliance relaxations.
DIN KYC Reminder
Track DIR-3 KYC deadlines and reactivation fee implications.
Corporate Governance Scorecard
Self-assessment of board governance practices — informational score.
Name Availability & Entity Type
Validate proposed company name against MCA naming rules.
MSME Udyam Classification
Micro, small or medium under the limits from 1 April 2025, with exports excluded and the 43B(h) and MSME-1 impact.
Labour & Payroll View category →
Salary Structure Builder
Compliant salary structure with 3 strategies — low, medium, high future liability.
Minimum Wages Calculator
State-wise minimum wages by skill category and industry.
Gratuity Calculator
Payable gratuity under the Code on Social Security, 2020.
Bonus Eligibility & Calc
Bonus payable under the Code on Wages, 2019.
PF Contribution Calculator
Employee and employer PF contribution — impact on take-home.
ESI Contribution Calculator
Employee and employer ESI share for eligible employees.
Leave Encashment Calculator
Compute leave encashment value with tax exemption indication.
Full & Final Settlement Calculator
Salary, leave encashment, gratuity, notice pay and bonus less recoveries, with the 2-day payment rule.
Overtime Wage Calculator
Overtime pay under the OSH Code, 2020 and the Delhi Shops & Establishments Act.
Retrenchment Compensation
Compensation under Section 25F of the Industrial Disputes Act.
Labour Law Compliance Calendar
PF, ESI, professional tax, labour welfare fund and contract labour deadlines.
Contract Labour Eligibility
Check applicability of the Contract Labour (R&A) Act, 1970.
Frequently asked questions about the tools
Which income tax calculators are available?
The income tax tools are: Income Tax Calculator; Advance Tax & Interest; TDS Calculator; HRA Exemption Calculator; 80C Deduction Planner; Capital Gains Tax Calculator; New vs Old Regime Comparison; Income Tax Due Date Calendar; Late Fee & Interest (234A/B/C/F); Form 15G/15H Eligibility; TDS on Property Calculator (194-IA); Presumptive Tax Calculator (44AD/44ADA); ITR Form Selector; Take-Home Salary Calculator; MSME Payment 43B(h) Tracker; TDS Interest & Late Fee Calculator; ITR-U Updated Return Calculator; Residential Status Checker (NRI / RNOR); Delhi Property Stamp Duty Calculator.
Which GST tools are available?
The GST tools are: GST Rate Finder & HSN/SAC Lookup; GST Invoice Generator; GST Return Due Date Calendar; GST Input Tax Credit (ITC) Calculator; GST Liability Calculator; Reverse Charge Mechanism Checker; GST Late Fee & Interest Calculator; GST Registration Eligibility Checker; GSTIN & PAN Format Validator; E-Invoice & E-Way Bill Checker.
Which labour law and payroll calculators are available?
The labour and payroll tools are: Salary Structure Builder; Minimum Wages Calculator; Gratuity Calculator; Bonus Eligibility & Calc; PF Contribution Calculator; ESI Contribution Calculator; Leave Encashment Calculator; Full & Final Settlement Calculator; Overtime Wage Calculator; Retrenchment Compensation; Labour Law Compliance Calendar; Contract Labour Eligibility.
Are the tools updated for the Income Tax Act, 2025?
Income of FY 2025-26 (AY 2026-27) is taxed, and its return filed, under the Income Tax Act, 1961. The Income Tax Act, 2025 and the Income Tax Rules, 2026 apply to income of Tax Year 2026-27, which began on 1 April 2026. Each income tax tool states which of these years it calculates for; several let you choose the year. Where a tool covers only one year, check the year shown before relying on the result.
Are the calculator results professional advice?
No. The calculators give general estimates for reference and do not consider every surcharge, special rate or exemption. They should not be relied on alone for tax filings or legal decisions; consult a Chartered Accountant for a computation on your specific facts.
Related: free document templates · compliance calendar and guides · CA services in Delhi.
Need a formal computation, not an estimate?
For client-grade computation, certified working papers or representation, please reach out for a proper engagement.
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