Indiana Mortgage Calculator
Indiana’s circuit breaker caps homestead property tax at 1% of your home’s value, no matter what the local rate says — pick your county below to see your real payment.
Loan & Property Details
Auto-fills from the county selected above; edit if you know your exact township + school district combined rate.
Your Estimated Monthly Payment
Choose a county and enter your details to see a plain-language read on your payment.
What If You Paid Extra Toward Principal?
Slide to test an extra monthly payment and see how many years and how much interest it saves.
What If Your Rate Changes?
Your 5-Year Equity Snapshot
Good to Know: Indiana Charges No Real Estate Transfer Tax
This is one closing cost you genuinely won’t see in Indiana, buyer or seller.
| State real estate transfer tax | None |
| County or municipal transfer tax | None |
| What you’ll still see on the settlement statement | Standard title insurance, escrow, and recording fees only |
| Comparable cost in a state with a transfer tax | Often 0.1%–4%+ of sale price elsewhere in this calculator series |
Indiana’s 1% Property Tax Cap, Explained
Indiana is the only state with a hard constitutional ceiling on property tax as a share of a home’s value, not just a growth limit like some states use, but an absolute cap. Under the state’s circuit breaker, homestead property tax can never exceed 1% of a home’s gross assessed value, rental residential property is capped at 2%, and commercial and other property at 3%, no matter how high the local combined rate runs. If your calculated bill after deductions would exceed that ceiling, the excess is automatically forgiven before the bill is even mailed. It’s one of the strongest taxpayer protections of any state, and it fundamentally changes how a mortgage calculator needs to work here, because getting the deductions and the cap both right actually matters to the number you see.
Marion, Lake, Allen, and Hamilton: how the four biggest counties compare
Marion County, coterminous with Indianapolis, carries the highest certified combined tax rates of any Indiana county, and a large share of Marion homesteads land right at or very near the 1% cap as a result. Lake County, covering Gary and Hammond in Indiana’s northwest corner, runs similarly high combined rates and sees many homesteads hit the cap as well. Allen County, home to Fort Wayne, runs meaningfully lower combined rates, so fewer homesteads there bump against the ceiling. Hamilton County, the fast-growing Indianapolis suburb anchored by Carmel and Fishers, runs the lowest combined rate of the four, helped by a large and growing commercial tax base that spreads the burden. Switching counties above resets both price and rate defaults to match.
| Home gross assessed value | $260,000 |
| Homestead Standard Deduction | – $48,000 |
| Value after Standard Deduction | $212,000 |
| Supplemental Deduction (40% of remainder) | – $84,800 |
| Net assessed value (what’s actually taxed) | $127,200 |
| Combined district rate example (Marion) | 2.00% |
| Calculated tax before the cap | $127,200 × 2.00% ≈ $2,544 |
| 1% circuit breaker cap | $260,000 × 1% = $2,600 |
| Actual bill (the lower of the two) | $2,544 |
Notice how close that calculated bill sits to the cap itself. That’s typical in Indiana’s higher-rate counties, and it’s why the two-part homestead deduction and the circuit breaker have to work together correctly for the number to be right, which is exactly what the calculator above does.
The two-part homestead deduction almost every Indiana owner qualifies for
Indiana’s Homestead Standard Deduction removes 60% of a home’s gross assessed value, capped at $48,000, for an owner-occupied primary residence. Whatever remains after that gets a Supplemental Homestead Deduction of 40% on top. Together, these two deductions typically shield roughly 65% of a home’s value from taxation before the local rate is even applied, which is why Indiana’s effective rates look so much lower than its nominal combined rates would suggest. You do need to file Form HC10 with your county assessor, generally by December 31 of the assessment year, to get the Standard Deduction started; once it’s on file, many counties now apply the Supplemental Deduction automatically without a separate application.
Why the cap is different for a rental than for your own home
The 1% cap only applies to a homestead, meaning your owner-occupied primary residence. Buy the same home as a rental or investment property, and Indiana caps it at 2% of gross assessed value instead, with neither the Standard nor Supplemental Deduction available. That’s a meaningful difference if you’re weighing owner-occupied house-hacking against a straight rental purchase, and it’s built directly into the toggle above.
Common Mistakes Indiana Buyers Make With the Numbers
- Applying the combined district rate directly to full price. Indiana’s deductions shield roughly 65% of typical home value before any rate applies; skipping that step badly overstates the bill.
- Forgetting to file Form HC10. The Standard Deduction isn’t automatic on a new purchase and must be filed with the county assessor.
- Not realizing the cap works differently for rentals. An investment property purchase loses both deductions and gets a 2% cap instead of 1%.
- Assuming every county sits at the cap. Lower-rate counties like Hamilton often land well under 1% once deductions are applied; the cap mainly binds in higher-rate counties like Marion and Lake.
- Comparing Indiana’s nominal rate to another state’s effective rate. Indiana’s headline combined rates look high until the deductions and cap are factored in; compare final dollar bills, not raw rates.
Tips for Lowering Your Indiana Mortgage Payment
- File Form HC10 with your county assessor as soon as you close; it’s the deduction that unlocks everything else, including the 1% cap treatment.
- Confirm the Supplemental Homestead Deduction actually appears on your first full tax bill under “Credits,” since it should apply automatically once the Standard Deduction is on file.
- Compare combined district rates across county lines, not just home prices, especially between Marion/Lake and Hamilton/Allen.
- Compare rate quotes from at least three lenders active specifically in the Indianapolis and Fort Wayne markets, since local pricing can differ from national averages.
- Use the extra-payment scenario above; even a modest additional principal payment compounds meaningfully over a 30-year Indiana loan.
Frequently Asked Questions
What is Indiana’s 1% property tax cap?
A constitutional circuit breaker that limits homestead property tax to no more than 1% of a home’s gross assessed value, 2% for rental residential property, and 3% for commercial and other property. Any calculated tax above that ceiling is automatically forgiven.
How is property tax calculated in Indiana?
Starting from gross assessed value, the Homestead Standard Deduction (60% up to $48,000) is subtracted, then the Supplemental Homestead Deduction (40% of what remains) is subtracted, and the local combined rate is applied to what’s left, subject to the circuit breaker cap.
What is Indiana’s Homestead Standard Deduction?
A deduction equal to 60% of a home’s gross assessed value, capped at $48,000, available for owner-occupied primary residences. It must be filed with the county assessor, typically using Form HC10.
Does the homestead deduction apply to rental property?
No, only an owner-occupied primary residence qualifies. Rental and investment property is not eligible for the Standard or Supplemental Deduction and is capped at 2% rather than 1%.
Does Indiana have a real estate transfer tax?
No, Indiana charges no state or local real estate transfer tax.
Which Indiana county has the lowest property tax rate?
Among the state’s larger counties, Hamilton generally runs a lower combined rate than Marion, Lake, or Allen, helped by a large commercial tax base.
What down payment do I need to buy a home in Indiana?
Conventional loans often start around 5% down, FHA loans typically require 3.5%, and VA loans can allow 0% down for eligible veterans.
When can I remove PMI on an Indiana home loan?
Federal law allows requesting PMI removal at 20% equity, with automatic lender cancellation at 22% equity based on the original amortization schedule.
When do I need to file for the Indiana homestead deduction?
Generally by December 31 of the assessment year with your county assessor, commonly using Form HC10.
Does this calculator include closing costs?
No, this tool estimates the ongoing monthly payment only. Indiana closing costs typically add a modest percentage of the purchase price, without any transfer tax added.
References
- Indiana Department of Local Government Finance, circuit breaker cap and homestead deduction guidance – in.gov/dlgf
- Marion, Lake, Allen, and Hamilton County Assessor offices, certified combined district rates – county government sites
- Indiana Constitution, Article 10, Section 1 (circuit breaker property tax caps)
- Freddie Mac Primary Mortgage Market Survey, weekly national rate averages – freddiemac.com/pmms
Related DexoCalc Tools
This Indiana mortgage calculator is part of the Mortgage Calculators cluster I am building out on DexoCalc. Start with the national Mortgage Calculator to compare Indiana against any other state, see another state with a large owner-occupant deduction in the Idaho Mortgage Calculator, check a state at the opposite extreme with no cap at all in the New Jersey Mortgage Calculator, or compare another no-transfer-tax state in the Arizona Mortgage Calculator. Browse every state-specific tool as new ones publish on the full Mortgage Calculators hub.
This calculator provides estimates for educational purposes only and is not a loan offer, pre-approval, or substitute for advice from a licensed Indiana mortgage professional or tax advisor. Property tax, deduction, and cap figures are approximations that vary by township, school district, and individual circumstances; confirm exact figures with your county assessor. Sources: Indiana DLGF, county assessor offices, Freddie Mac.