This estimator approximates annual Indianapolis property tax for an owner-occupied home. It starts from market value, applies Indiana’s standard and supplemental homestead deductions, computes tax at a typical Marion County rate, and enforces the 1% constitutional cap that keeps the effective rate near 0.87%.
How it works
Indiana sets gross assessed value equal to market value, then subtracts homestead deductions before applying the local rate, with a 1% circuit-breaker ceiling:
gross_av = market_value
standard_ded = min(48000, gross_av * 0.60)
supplemental = (gross_av - standard_ded) * 0.35 (capped at $600k base)
taxable_av = gross_av - standard_ded - supplemental
raw_tax = taxable_av * local_rate
capped_tax = min(raw_tax, gross_av * 0.01) (homestead 1% cap)
Example
On a $250,000 home, the standard deduction is $48,000 and the supplemental is
(250000 - 48000) * 0.35 = $70,700, leaving a taxable value of $131,300.
Applying the local rate and the 1% cap produces an estimated annual tax of about
$2,175, roughly 0.87% of market value.
Notes
Non-homestead property does not get these deductions or the 1% cap and is capped at 2% or 3% instead. Township rates, mortgage and senior deductions, and special levies all shift the real bill. Confirm with the Marion County Assessor and your tax statement.