Miss an Indiana property tax installment and the penalty is 5% only if you had no prior delinquency and pay within 30 days — otherwise 10%, with another 10% each installment date you stay delinquent. What IC 6-1.1-37-10 actually says ahead of the November 10, 2026 fall due date.
Every Indiana county takes property tax payments online — through its own portal, with its own fees (roughly $1–2 for e-check, ~2.5% for cards). How to find the official payment site, what it costs, and how to spot third-party lookalikes.
Where Indianapolis homeowners can get real help with property taxes: township trustee assistance, the Treasurer's Flex Pay plan, deductions, and tax-sale prevention.
Penalties, the 30-day 5% window, payment options through the Marion County Treasurer, and how far you actually are from tax-sale risk. A practical guide for Indianapolis owners who missed the spring installment.
The Marion County Treasurer launched paperless property tax billing with the spring 2026 invoice. How to enroll at invoicecloud.com/indy, who qualifies, and the pitfalls that can still cost you penalties.