Built for operators, lenders, and LPs

Institutional-grade real estate underwriting. Without the institution.

Six precise, beautifully-crafted calculators that replace the spreadsheets you've been duct-taping together since analyst year.

waterfall — $1.0M LP equity · 8% pref · 80/20 split
LP IRR
18.4%
LP Multiple
2.14x
GP Promote
$486K
Hold
5 yrs
Y1Y2Y3Y4Y5

The suite

Six calculators. Every number an analyst actually needs.

Open Waterfall

Why Fortis

Built for numbers you'd put in front of a lender.

Accurate institutional math

The same formulas your acquisitions team uses — pref accrual, catch-up, IRR hurdles, debt-yield binding constraints — applied correctly.

Beautiful exportable outputs

Every table and chart is screenshot-worthy. Export to PDF or Excel and drop it into an LP memo without restyling a single cell.

No spreadsheet required

Stop fixing broken cells at 11pm. Inputs on the left, results on the right, math in between — already verified.

Pricing

One price. Every calculator. No seats nonsense.

Free
$0/ month

Try every tool. Run the math. See if it earns your trust.

  • 3 runs per tool, per month
  • All six calculators
  • On-screen results only
Start free
Pro
For professionals
$12.99/ month

For operators putting numbers in front of capital sources.

  • Unlimited runs across every tool
  • PDF + Excel export
  • Saved deals & deal comparison
  • Priority email support

FAQ

Honest answers.