Indiana Income Tax Calculator
Most online tax tools oversimplify Indiana’s IT-40 rules, leaving you with estimates that don’t match reality. Our calculator is designed to stay true to Indiana’s tax mechanics, giving you a clear, reliable picture of what you owe.
Need help beyond the numbers? Sargent CPA, LLC specializes in Indiana tax preparation and planning—get peace of mind knowing your return is done right.
Indiana Income Tax Calculator
Tax year: 2025 • State rate: 3.00% • County rates as of Jan 1, 2025 • For estimates only.
1. County & filing
2. Age
3. Income
4. Exemptions
5. Deductions
6. Payments
7. Credits
8. Results
Step 1: County & Filing Status
Your rate is based on your county of residence (or principal employment) on January 1.
If MFS, caps are halved ($1,500 renter; $1,250 property tax). You can claim a $1,000 spouse exemption only if spouse had zero federal AGI:
.
Step 2: Age
Step 3: Income
Numbers only; commas are OK (e.g., 120,000).
Step 4: Exemptions
Additional exemption is $3,000 for each first‑time claimed qualifying child; otherwise $1,500 per qualifying child.
Age‑65 exemptions are applied automatically based on the age bracket(s) you selected.
Step 5: Deductions
Residence must be subject to Indiana property tax. (Caps applied in the background.)
Do not include amounts expensed on Schedules C/E/F. (Caps applied in the background.)
Enter the count of qualifying dependent children; we multiply by $1,000 automatically.
Indiana subtracts this amount in full.
Deductible for Indiana if you were a member ≥1 month in the year.
Step 6: Payments
Step 7: Credits
Credit is 20% of contributions, up to $1,500 ($750 MFS), nonrefundable.
Nonrefundable credit; Indiana public K‑12 only.
Indiana EIC = 10% of your federal EIC (refundable).
Results
Assumptions & Sources
- State rate and county rates per Indiana DOR Departmental Notice #1 (effective Jan 1, 2025)—state rate 3.00% and residency rule determined on Jan 1.
- Private school/homeschool deduction: $1,000 per qualifying dependent — .
- Personal/age/blind exemptions & first‑time dependent rules — see .
- Public school educator credit: up to $100 (nonrefundable) — .
This tool covers common items only and is for estimation. See the IT‑40 instructions for full rules.
Last updated: 2025‑10‑05
Disclaimer:
This calculator is provided for informational and educational purposes only. Results are estimates based on current Indiana tax rules and may not reflect your exact tax liability. Tax laws and rates change frequently, and special circumstances may apply.
This calculator is provided for informational and educational purposes only. Results are estimates based on current Indiana tax rules and may not reflect your exact tax liability. Tax laws and rates change frequently, and special circumstances may apply.
This tool does not constitute legal, tax, or accounting advice. For personalized guidance, please consult a qualified tax professional. Use of this calculator is at your own risk.