All tools below are hosted on Calc Guru (calcguru.in) — a dedicated tax calculator portal built and maintained by CA professionals. Every calculator is updated for the Finance Act 2025 amendments applicable for FY 2026-27.

Tax & Compliance Calculators

• Income Tax Calculator — Old vs New regime comparison for FY 2026-27
• Advanced Income Tax Calculator — All five heads of income with deductions
• Advance Tax Calculator — Quarterly advance tax instalments per Sec 208
• HRA Exemption Calculator — Sec 10(13A) least-of-three exemption
• Capital Gains Tax Calculator — STCG and LTCG under post-Budget 2024 rates
• GST Calculator — Forward and reverse GST at 5%, 12%, 18%, 28%
• F&O & Intraday Trading Tax — Turnover (ICAI method), 44AB audit check, speculative vs non-speculative
• TDS Calculator — Section-wise TDS rates and threshold checks for FY 2026-27
• TDS on Property Sale — Section 194-IA TDS on immovable property purchases
• GST Late Fee & Interest — Late fee and interest on delayed GSTR-1 or 3B filing
• 80C / Section 123 Optimiser — Maximise the Rs 1.5 lakh deduction across eligible instruments
• Professional Tax Calculator — State-wise professional tax liability and slab lookup
• Shop & Establishment — State-wise Shop and Establishment registration fees and validity

Business Startup Tools

• Business Registration Finder — Find the right registration for your business structure
• NIC Code Finder — Search the correct NIC activity code for incorporation
• MOA Objects Builder — Draft the main objects clause for your MOA

Trademark & IP Tools

• Trademark Fee & Cost — Government and professional fees for a TM application
• Trademark Class Finder — Find the right trademark class for your goods or services
• Brand Name Check — How to check brand name availability before you apply
• TM Status Decoder — Decode trademark status entries and key deadlines
• TM Objection Reply — Draft a reply to a Section 9 or 11 examination objection

ITR Filing & Interest Tools

• 234A/B/C Interest & 234F Fee — Interest for late filing, short or deferred advance tax and late-filing fee
• Section 89(1) Arrears Relief — Relief on salary arrears with the Form 10E working
• Which ITR Form Should I File? — Find the correct ITR form for your income profile

Stamp Duty Calculators

• Share Transfer (SH-4) — Stamp duty on share transfer deeds
• LLP Agreement — State-wise stamp duty on LLP agreements
• Partnership Deed — Stamp duty on partnership deeds by state
• Gift Deed — Stamp duty on gift deeds (movable or immovable)
• Debenture — Stamp duty on debenture issues
• Rent / Lease Deed — Stamp duty on rent and lease agreements

Tax Notice Reply Tools

• Notice Reply Centre — All GST and income-tax notice reply tools in one place
• GST DRC-01 / 01A — Draft a reply to a GST DRC-01 or DRC-01A demand notice
• GST ASMT-10 Scrutiny — Respond to a GST ASMT-10 scrutiny notice
• IT 148A Reassessment — Object to a Section 148A reassessment notice
• IT 143(1) Adjustment — Respond to a Section 143(1) intimation adjustment

Salary, Retirement & Savings Calculators

• Salary / CTC Calculator — CTC-to-take-home breakup with PF, ESI, PT deductions
• Gratuity Calculator — Payment of Gratuity Act 1972 — covered and non-covered employees
• NPS Calculator — Corpus projection with Sec 80CCD(1), 80CCD(1B) deductions
• PPF Calculator — 15-year PPF maturity at prevailing interest rate
• EPF Calculator — Employee Provident Fund corpus and interest projection
• Sukanya Samriddhi (SSY) — SSY maturity value at the current notified rate

Loans & Investment Calculators

• EMI Calculator — Home, car and personal loan EMI with amortisation schedule
• FD and RD Calculator — Fixed and recurring deposit maturity with tax impact
• SIP Calculator — Regular and step-up SIP with compounding frequency options
• Home Loan Calculator — EMI, total interest and amortisation for a home loan
• Lumpsum Calculator — Future value of a one-time investment
• Post Office and APY — Post Office schemes and Atal Pension Yojana projections
• Compound Interest — Compounded growth across periods and frequencies
• Top Mutual Funds & Compare — Compare current NAV, AUM and returns of leading funds

CA-Prepared Excel Utilities (Free Download)

• Income Tax Old vs New Regime Comparison — Excel with auto-calculations
• TDS Rate Chart FY 2026-27 — All sections, thresholds and rates
• Salary Structure Planner — Design tax-efficient CTC structures
• Depreciation Calculator — Companies Act & Income Tax both methods
• EMI Amortisation Schedule — Month-wise loan repayment tracker
• FD/RD Maturity Calculator Excel — Compare multiple deposits