Indiana’s Unified Tax Credit for the Elderly is a small state income tax credit for residents who were at least 65 during the tax year and whose household federal adjusted gross income is under $10,000. The amount runs from $40 to $140, depending on your income and whether one or both spouses are 65 or older.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly It isn’t life-changing money, but on a fixed income every dollar off a tax bill helps.
Who Qualifies
You meet the age test if you turned 65 at any point during the tax year. A birthday on December 31 counts. A birthday on January 1 of the following year does not, so you’d claim the credit the next time you file.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
You don’t have to be 65 yourself. If your spouse was 65 or older during the tax year, you can file the claim even if you’re younger.2Indiana Department of Revenue. Seniors Only one person per household may claim the credit in a given year.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
You must have lived in Indiana for at least six months during the tax year. Full-year residency isn’t required, so someone who moved to Indiana partway through the year can still qualify as long as they hit the six-month mark.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
One hard exclusion: anyone who spent 180 days or more incarcerated in a local, state, or federal facility during the tax year cannot claim the credit, regardless of age or income.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
The $10,000 Income Limit
The credit uses household federal adjusted gross income, meaning the AGI reported on your federal return. If you live with a spouse, both incomes count regardless of who earned what.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly That figure includes wages, pensions, taxable interest, and the taxable portion of Social Security. Household income of $10,000 or more disqualifies you entirely.
Social Security is where many seniors get the math wrong. Not all of a Social Security payment counts toward federal AGI. Depending on your total income, anywhere from none to 85 percent of your benefits may be included. For many low-income seniors, little or none of their Social Security ends up in that AGI number, which makes the $10,000 ceiling easier to stay under than it looks.
How Much the Credit Is Worth
The credit varies by income and by whether one or both spouses are 65 or older. The statute sets two schedules.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
If you are single, widowed, or married with only one spouse 65 or older:
- Household income under $1,000: $100
- $1,000 to under $3,000: $50
- $3,000 to under $10,000: $40
If you and your spouse are both 65 or older and live together:
- Household income under $1,000: $140
- $1,000 to under $3,000: $90
- $3,000 to under $10,000: $80
No combination of circumstances produces a credit above $140.
Rules for Married Couples
If you’re married, you must file a joint Indiana return to claim the credit. Filing separately zeros it out, with no exceptions, even if each spouse’s individual income would otherwise sit well below $10,000.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
When both spouses are 65 or older by the end of the tax year and live together, the couple uses the higher schedule. If only one spouse is 65 or older, the lower schedule applies. A couple that doesn’t live together during the tax year uses the single-filer schedule for the qualifying spouse.1Indiana General Assembly. Indiana Code 6-3-3-9 – Unified Tax Credit for the Elderly
Which Form to File
Most taxpayers claim the credit on their regular Indiana income tax return: Form IT-40 for full-year residents or Form IT-40 PNR for part-year residents and nonresidents. The credit is built into those forms, and electronic filing software will walk you through the relevant questions.2Indiana Department of Revenue. Seniors
If your income is low enough, you can skip the full return and file the one-page Form SC-40, a simplified form designed specifically for this credit. The SC-40 has tighter income limits than the credit itself:
- Single or widowed: less than $2,500
- Married, one spouse 65 or older: less than $3,500
- Married, both 65 or older: less than $5,000
These thresholds govern SC-40 eligibility only. If your income is above them but still under $10,000, you remain eligible for the credit; you just have to claim it through the IT-40 or IT-40 PNR instead.2Indiana Department of Revenue. Seniors
The Indiana filing deadline is April 15, 2026, for the 2025 tax year. An extension pushes the filing deadline to November 16, 2026, but any taxes owed are still due by April 15.3Indiana Department of Revenue. Extension of Time to File Forms are available on the Indiana Department of Revenue website, at public libraries, and through free tax preparation programs.
If you want in-person help, DOR customer centers in Indianapolis, Merrillville, and Clarksville take walk-ins; other district offices are by appointment.4Indiana Department of Revenue. District Offices Volunteer Income Tax Assistance (VITA) sites around the state also prepare returns at no charge for seniors and low-income filers.
Why Claims Get Denied
The most common reason is going over the $10,000 income limit, usually because a filer undercounts income sources or forgets a spouse’s income is part of the household total. The DOR cross-references what you report against federal records, so discrepancies show up quickly.
Residency questions trigger denials too. If the address on state records doesn’t match your filing, the DOR may question whether you met the six-month residency requirement. This comes up often for people who recently relocated or keep addresses in more than one state.
Filing status is another trap. Married couples who file separately get an automatic zero credit, and some don’t realize it until the return is already in. Filing the SC-40 when your income exceeds the SC-40 thresholds, even though it’s under $10,000, can also cause processing problems.
Incomplete paperwork rounds out the list. Missing information on supporting forms, illegible documents, or missing attachments on a mailed return can all get a claim rejected.
If Your Claim Is Denied
You have 60 days from the date on the denial notice to file a written protest with the DOR. That deadline is set by statute and cannot be extended, so act on it quickly.5Indiana Department of Revenue. Appeals
Your protest should explain why the denial was wrong and include supporting documents: corrected forms, proof of residency, income records, or whatever speaks to the specific reason for rejection. Mail it to the DOR’s Legal Division in Indianapolis along with the Protest Submission Form.5Indiana Department of Revenue. Appeals
If the denial came from a simple error on your end, like a missing form or a math mistake, filing an amended return with the correction may be faster than a formal protest. Call the DOR first to see which path fits your situation.
When a protest doesn’t settle the dispute, the next step is the Indiana Tax Court, which has exclusive jurisdiction over appeals from final DOR determinations. You generally have 180 days from the DOR’s letter of findings to file an original tax appeal.6Indiana Tax Court. About the Tax Court You don’t have to hire a lawyer, but the Tax Court is a formal judicial proceeding. For a credit worth $140 at most, it’s worth weighing the effort before taking that step.