Free for assessors—no credit card, no waiting, no nonsense.
- •This Year's Stats— COD, PRD, PRB, median ratio, plus IAAO's proposed Vertical Equity Indicator.
- •Lawsuit Repellent — Spots regressive patterns before plaintiffs' attorneys do.
- •Charts for Clarity — Actionable charts that make values and equity easy to explain.
- •IAAO-Aligned — The same methodology oversight agencies use.
- •Why free? — Access to equity diagnostics shouldn’t depend on staffing or budget cycles.
Makes sense...
...or keep reading to discover exactly why 3 minutes with this free tool could save your next appeal — and your reputation.
The Standards Are Changing
IAAO's ratio study standard hasn't been updated since 2013. The 2025 exposure draft is a complete rewrite—new COD thresholds, VEI as the primary equity test, tighter oversight guidance.
Meanwhile, equity lawsuits are hitting front pages from coast to coast.
Courts are citing IAAO standards by name.
"We didn't know" isn't a defense anymore.
What You'll Get
Get a full ratio study in ~3 minutes.
Your data never leaves your computer. No upload. No cloud. Your file stays in your browser—we never see it.
- All the statistics: COD, PRD, PRB, median, mean, weighted mean
- Vertical Equity Indicator (VEI)—most offices haven't run this yet
- Ratio distribution and outlier detection
- Interactive value-vs-sale-price charts
- Box plots ready for any hearing room
Not a teaser. Not a sample. The real deal.
What This Isn't
Free trial that locks your data after 7 days
Bait-and-switch into a sales call
Generic dashboard from people who've never heard of USPAP
Built by assessors, for assessors.
Why We're Giving This Away
Running industry standard value and equity checks shouldn't be blocked by budget and procurement processes.
So we built RatioPal and made it free.
No contracts. No strings. Just results.
Try it.
If it helps, you'll remember us.
P.S. — The commissioners won't wait. The reporters won't wait. The plaintiffs' attorneys definitely won't wait.
Your ratio study takes 3 minutes.
We're Valuebase. We make valuation, visualization, and AI tools for assessors to get stuff done fast.