Free CA Tax Calculators 2026
20 free calculators for Indian CA firms and tax consultants. No login, no signup.
GST Late Fee Calculator
Section 47 late fee + Section 50 interest for GSTR-1, GSTR-3B, GSTR-9
TDS Penalty Calculator
Section 201(1A) interest for late TDS deduction and deposit
Income Tax Late Fee
Section 234F, 234A, 234B, 234C for delayed ITR and advance tax
Advance Tax Calculator
Estimate quarterly advance tax instalments for individuals and companies
234B & 234C Interest Calculator
Section 234B default interest + Section 234C instalment deferment interest, instalment by instalment
HRA Exemption Calculator
Calculate HRA exemption under Section 10(13A) — Jan–Feb season
GST ITC Set-Off Calculator
ITC utilisation order: IGST → CGST → SGST under Rule 88A
CA Firm Capacity Calculator
How many clients can your team handle? Estimate billing capacity
TDS Rate Finder
2026-27 TDS rate chart for all sections — 192, 194A, 194C, 194J and more
Tax Audit Checker
Do I need a tax audit? Instant YES/NO under Section 44AB with reasoning
GST Registration Checker
Do I need to register for GST? Covers turnover, inter-state, e-commerce, reverse charge
CA Firm Fee Calculator
Price your retainer right — market-benchmarked fee bands for GST, TDS, ITR, audit by city tier
CA Practice Revenue Calculator
Full P&L for your CA firm — monthly revenue, EBITDA margin, revenue per client & employee
GSTR-1 vs GSTR-3B Mismatch
ITC at risk, potential demand (Sec 73/74), and notice risk from GSTR-1 vs GSTR-3B gap
GSTIN Validator & Decoder
Verify checksum and decode state code, PAN, and entity number from any GSTIN
HSN/SAC Code Finder
Search ~50 common HSN/SAC codes and their GST rate slabs by keyword or category
Rent Receipt Generator
Generate a printable rent receipt for HRA claims — PAN and revenue stamp rules included
Salary/CTC Calculator
Break down CTC into Basic, HRA, PF, and estimate take-home under old vs new tax regime
Depreciation Calculator
WDV method under Section 32 with block-of-assets logic and the 180-day half-rate rule
GST Calculator
Add or remove GST at 5/12/18/28% with CGST+SGST vs IGST breakdown
Tired of manual calculations?
TaxZeo tracks all client due dates and penalties automatically — so you always know which clients have TDS interest, GST late fees, or advance tax dues, without opening a single calculator.
Start Your Free Trial — No Credit Card Required
Join 500+ CA firms managing compliance smarter with TaxZeo.
Found this helpful? Add TaxZeo as a Preferred Source on Google to see our CA guides first in your search results.