Free calculators
Run the numbers before auction day. Every tool is free, instant, and built for beginners.
Tax Deed ROI Calculator
Estimate your real profit after closing, holding, and selling costs — before you bid.
Maximum Bid Calculator
Work backward from market value to the highest bid that still leaves your target margin.
Tax Lien Interest Calculator
Project what a tax lien certificate pays at your winning rate, including minimum penalties.
Redemption Period Calculator
Find the date a redemption period ends and how many days remain.