Skip to main content
TierDrift
Free tool · No signup

SaaS price increase calculator

Turn a per-seat price change into a concrete monthly and annual budget impact. Enter the old price, new price, and number of billed seats to see the result instantly.

Exact cent-based calculation Values stay in your browser
Enter your pricing change
Use the monthly price for one seat, license, or other billed unit.

Must be greater than $0.

Use 0 if the new plan is free.

Enter a whole number of billed units.

Budget impact
Instant estimate based on the values you enter.
Calculated locally

Unit price change

+25%

Monthly spend moves from $300 to $375.

Monthly change
+$75
Annual change
+$900
New annual spend
$4,500

Transparent math

How the calculation works

The percentage change is (new unit price − previous unit price) ÷ previous unit price × 100. Monthly impact multiplies the unit-price difference by the number of seats. Annual impact multiplies that monthly change by 12.

Example: a move from $20 to $25 per seat across 15 seats is a 25% increase. The budget rises by $75 per month or $900 per year, producing a new annual spend of $4,500.

What this estimate includes

  • One monthly unit price applied to every billed seat
  • Percentage change at the unit-price level
  • Monthly and 12-month budget change
  • A decrease or no-change scenario as well as an increase

Use the estimate responsibly

What it does not model

This is a planning estimate, not a vendor quote. It does not include taxes, exchange rates, negotiated discounts, contract minimums, prorating, tiered volume pricing, usage overages, implementation fees, or changes in seat count. For annual contracts billed at a different effective monthly rate, use that contracted monthly equivalent.

Add market context

Check the source record

A budget estimate is more useful when the underlying price is current. TierDrift pairs normalized SaaS plans with source links, observation dates, and an append-only pricing record.

Browse pricing records Read the methodology