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Indiana is among the 14 states that have a flat tax. It also has no inheritance tax and an efficient property tax system that is designed to prevent unconstrained increases, according to the Tax Foundation. Those are among the factors that have contributed to the state’s No. 10 ranking on the Tax Foundation’s 2026 State Tax Competitiveness Index.
Indiana has a 3 percent flat income tax. However, local governments can impose their own income taxes, which range from 0.5 to 3 percent, according to the Tax Foundation.
Investment income in Indiana is subject to the 3 percent flat individual income tax rate. Some exceptions exist for interest income from governmental obligations like treasury bonds. Find more details here.
Indiana does not tax Social Security benefits.
Indiana has a 0.76 percent average property tax rate, according to the latest data from the Tax Foundation. Rates vary by county, from a low of 0.45 percent in Switzerland, Brown and Putnam counties to 0.93 percent in Lake County. The lowest median property tax paid was $627 in Clay County, while the high was $3,549 in Hamilton County.
Indiana has no inheritance or estate tax.
Homeowner residential property tax deduction: Indiana homeowners can deduct up to $2,500 of the property tax they pay on their principal residence.
Unified tax credit for the elderly: Residents 65 and older can get a credit of $40 to $140, depending on marital status and income. They must have a federal adjusted gross income of $10,000 or less and must have been a resident of the state for six months or more. Additionally, they must not have spent 180 days or more in prison during the year.
Additional exemption for the elderly: Residents age 65 and older whose federal adjusted gross income is less than $40,000 are eligible for an additional $500 exemption.
No. Indiana offers a tax deduction for military retirement and/or survivor benefits, eliminating any liability for that pay.
The deadline for 2025 taxes to be filed is April 15, 2026.
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