SaaS Agreement Calculator

SaaS pricing looks simple on the vendor's website — a per-seat rate — but the real number you'll pay is buried in the contract's fine print. This calculator reconstructs that number month by month. It starts from your list per-seat price and applies a billing-frequency discount (0% for monthly, 15% for annual, 25% for multi-year commitments) to get an effective rate, multiplies by seat count for the base monthly cost, then layers on a usage/overage surcharge for the API calls, storage, or bandwidth charges that often aren't in the headline price. From there it walks the contract month by month, compounding an annual price increase at each 12-month mark so a multi-year deal's later years cost more than its first — exactly how most SaaS renewal clauses work.

The result includes the average monthly cost, the effective per-seat rate once overages and escalation are folded in, annual contract value, and a total-cost-of-ownership figure that adds rough estimates for training (5% of year-one base cost), integration work (half the implementation fee), and ongoing admin overhead at 2 hours per month at $75/hour — figures worth replacing with your own if you have better data. Two things trip people up: first, the billing-frequency discount is a fixed assumption baked into the calculator (15%/25%), not whatever your specific vendor quoted, so override it mentally if your contract differs. Second, the annual price increase compounds only at contract-year boundaries, not monthly, so short contracts under 12 months won't show any escalation at all even if your paperwork has an auto-renewal clause waiting to kick in later.