How to use this calculator
- Enter monthly request volume and on-demand price.
- Enter the maximum volume eligible for discount.
- Set the discount and recurring fee.
- Compare net savings and the break-even eligible request volume.
#1828 · Startup & SaaS Tool
API Gateway Savings Plan Calculator
Estimate API Gateway savings from discounted request pricing by comparing eligible volume, discount, recurring plan fees, and uncovered requests with an on-demand baseline.
Calculator
Usage and plan termsFormula
Baseline = Requests × On-demand price
Plan = Eligible requests × Discounted price + Uncovered requests × On-demand price + Plan fee
Plan = Eligible requests × Discounted price + Uncovered requests × On-demand price + Plan fee
What the result means
The main result is net savings across the selected period. Negative savings indicate that fees outweigh the request discount for the entered volume.
The calculation assumes only actual eligible requests receive the discount and uncovered requests remain on demand. It does not model prepaid take-or-pay commitments unless added to the fee.
Example calculation
For 1,000 million requests at $1.20 per million, with 800 million eligible for a 25% discount and a $100 fee, baseline cost is $1,200 and plan cost is $1,060. Savings are $140 monthly or $1,680 over 12 months.
Tips for better results
- Use billing-export data rather than rounded dashboard totals.
- Keep traffic volume and pricing units aligned before comparing scenarios.
- Recalculate after a contract, architecture, or retention-policy change.
- Include support or minimum-spend charges in the plan fee.
- Use conservative eligible volume when traffic is volatile.
Frequently asked questions
Which API requests receive the savings-plan discount?
Actual requests up to the entered eligible volume receive the discounted price.
Can API Gateway plan savings be negative?
Yes. The recurring fee can exceed the discount earned at low eligible volume.
How is break-even eligible request volume calculated?
It divides the plan fee by the savings earned per million eligible requests.
Does excess API traffic receive the discount?
No. Requests above the eligible volume are priced at the on-demand rate.
Does the calculator model prepaid commitments?
Not automatically. Add unavoidable prepaid cost to the monthly plan fee.
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Variables and units
| Variable | Meaning | Unit |
|---|---|---|
| Q | Monthly requests | million |
| E | Discount-eligible requests | million |
| D | Plan discount | % |
| F | Recurring plan fee | $/month |