Every appeal guide — including ours — ends at the same place: the determination. The PTABOA issues a Form 115, or the Indiana Board of Tax Review rules in your favor, or you settle at the informal conference. Your assessed value drops.
Then nothing happens for a while, and owners start asking the question this post answers: where is my money, and how much should it be?
The short version: once a reduction is final, the county auditor applies the correction, recalculates your tax liability for the affected year or years, and either refunds the overpayment or credits it against your upcoming installments — with interest. The mechanics live in two places in the Indiana Code: the appeal procedures of IC 6-1.1-15 and the refund chapter, IC 6-1.1-26. Here's how they fit together.
Step 1: The determination becomes final
A reduction isn't actionable until appeal rights have run out. Three common endpoints:
- PTABOA determination (Form 115) — final if neither you nor the assessor escalates to the Indiana Board of Tax Review within the 45-day window
- IBTR final determination — final if no one petitions the Indiana Tax Court
- Stipulated settlement — final when both sides sign, often at the preliminary informal conference
Until that point, the county won't recalculate anything. This is one reason assessor-initiated appeals of taxpayer wins sting: they delay the refund clock, not just the outcome.
Step 2: The auditor applies the correction
Once the determination is final, the county auditor adjusts the assessment on the tax duplicate and recalculates what you actually owed for each affected year — applying your deductions, the $300 homestead credit where applicable, and the circuit breaker caps at the corrected assessed value.
If the corrected liability is less than what you paid, you have an overpayment. Two things can happen to it:
- Refund — the auditor issues a warrant (a county check) for the overpayment plus interest
- Credit — the overpayment is applied against your next installment or installments
Counties handle small overpayments differently; some default to credits against the November installment because it requires no check run. For very large appeal-driven refunds, the county has explicit statutory cover: under IC 6-1.1-26-4.1, real property refunds of $100,000 or more resulting from an appeal can be applied as credits against future installments instead of paid out at once — a provision aimed at protecting small taxing units from a single catastrophic refund, and one commercial owners should plan around.
Note
You usually don't need to file anything to get an appeal-driven refund. When the reduction comes out of the IC 6-1.1-15 appeal process, the correction flows from the assessor to the auditor automatically. The separate "claim for refund" form (covered below) is for overpayments that did not come from your own appeal. That said, calling the auditor's office after your determination goes final is the single best way to keep your file from sitting in a stack.
Step 3: Interest gets added
Indiana pays you interest on the overpayment — this is statutory, not a courtesy. Under the refund chapter, interest is computed from the date the taxes were paid or due, whichever is later, to the date the refund is approved, using the rate referenced in IC 6-8.1-10-1, which the Department of Revenue sets annually. IC 6-1.1-37-11 contains the parallel interest rules for refunds and credits that result from an assessment being decreased on appeal.
Practical implications:
- Interest runs per year of overpayment. A 2023-pay-2024 overpayment refunded in 2026 accrues roughly two years of interest; the 2025-pay-2026 portion accrues less.
- The rate changes year to year, so don't assume a single flat figure across a multi-year refund. Ask the auditor's office to show the interest computation — they calculate it per affected year.
- Slow counties pay more interest. There's no incentive for you to rush the county, but there is one for them.
Step 4: The check (or credit) arrives
Once a refund claim is approved by the county officials who must sign off, the statute requires the auditor to issue the warrant within 45 days of approval. The squishy part is everything before approval: how fast the assessor certifies the corrected value, how fast the auditor recalculates, and where you sit in the queue. In practice, expect the full cycle from final determination to check to take one to two billing cycles — faster in small counties, slower in Marion and Lake during appeal season.
The other route: a refund claim when you never appealed
There's a second door into a refund that has nothing to do with winning your own appeal: the claim for refund under IC 6-1.1-26-1.1. This is for taxpayers who paid more than was due because of things like:
- A final determination (by the PTABOA, IBTR, DLGF, or a court) for that same parcel and tax year that wasn't reflected in the bill
- A math error in computing tax, interest, penalties, or delinquencies carried forward
- A payment made twice, or applied to the wrong parcel
The deadline matters: the claim must be filed within three years after the tax was paid, or three years after the final disposition of an appeal for that tax year — whichever is later. It's filed with the county auditor on the state-approved form, and it must be approved by the auditor, the county assessor, and the county treasurer. If any of them disapprove it, you can appeal the denial to the Indiana Board of Tax Review, which hears it like an assessment appeal.
Two honest caveats. First, the grounds are narrow — a refund claim is not a substitute for an appeal you never filed. You cannot use it to argue your assessment was simply too high; that argument belonged on a Form 130. (This is exactly why missing the June deadline is so costly — see our missed-deadline guide.) Second, claims get scrutinized harder than appeal-driven refunds because three offices have to sign off independently.
Escrow: where the money actually lands
If your taxes are paid through a mortgage escrow account, the refund path gets one extra hop. Counties refund the taxpayer of record — which is usually you, the owner, even when your servicer made the payments. Three scenarios:
| Scenario | What happens | What to do |
|---|---|---|
| Check comes to you, servicer paid the taxes | You're holding escrow money | Notify your servicer; either deposit the refund into escrow or keep it and let the next analysis catch up — but tell them either way |
| Check goes to the servicer | It lands in your escrow account as a credit | Request an escrow analysis so the surplus is refunded or your payment drops, rather than sitting until the annual review |
| Credit applied to future installments | Your servicer's next disbursement is smaller | Confirm the servicer's tax line reflects the corrected amount, or they'll over-collect all year |
The bigger escrow effect is forward-looking: your corrected assessed value lowers next year's bill, but your servicer won't know that until it sees the new bill. Our escrow and SEA 1 guide covers how to force that adjustment early instead of waiting out the lag.
Multi-year appeals: when several years resolve at once
It's common — especially after an IBTR or Tax Court round — for two, three, or four assessment years to resolve in a single determination. When that happens:
- The auditor recalculates each year separately, at that year's tax rates, deductions, and cap math
- Interest accrues per year, from each year's payment dates
- The combined refund can be large enough to trigger the $100,000 installment-credit option for commercial parcels
Also remember that while a multi-year appeal is pending, Indiana's payment-protection rules let you pay based on the prior year's assessment rather than the disputed one — the mechanics are in our appeal payment protection guide. If you used that protection, your "overpayment" may be smaller than you think, because you never paid the inflated amount in the first place.
Your post-win checklist
- Confirm finality. Note the date appeal rights expired; nothing moves before then.
- Call the county auditor's office with your parcel number and determination. Ask: is this processed, what is the corrected liability per year, and will it be a refund or credit?
- Ask for the interest computation per affected year.
- Decide refund vs. credit if the county gives you the choice — a credit is fine if you'll owe in November anyway.
- Loop in your mortgage servicer if you escrow, and request an analysis once the corrected bill exists.
- Verify the corrected AV carried forward. Pull your parcel in Property Lookup and confirm next year's assessment starts from the reduced value, not the old one. Corrections failing to roll forward is one of the most common — and most fixable — errors in the system.