# Credits & billing

One rate — **$0.15 per 1,000 queries** — on every plan. Prepay a year and it's **$0.1125**, 25% less.

## Your balance

- Each account has **one query balance**. Plan payments, annual prepayments, add-ons and top-ups all add to it.
- **Only successful requests are charged.** Errors, timeouts and `429`s cost nothing.
- **Credits roll over** and each purchase is **valid for 12 months**. The oldest queries are used first.
- The dashboard shows your balance and the next expiry ("X queries expire on <date>").

## Free allowance

Every verified account gets **1,000 free queries a month**, used before your paid balance. It refills monthly and unused free queries don't roll over. No card is needed.

## Plans

Plans set your throughput. Every $10/mo is 1 request per second and 66,667 queries.

- **Monthly:** the month's queries are added each time you're billed.
- **Annual:** the full year's queries are added upfront, at 25% off.
- Self-serve plans go up to 100 RPS ($1,000/mo). Above that, [contact sales](mailto:sales@serpwiz.com).

See [pricing](https://serpwiz.com/#pricing) for the full table.

## Top-ups

Ran out before renewal? Buy more queries any time at $0.15/1K from the dashboard. Top-ups add to your balance (valid 12 months) but don't change your RPS. They're available while you have an active plan.

## Add-ons

Need more RPS without changing plans? Add RPS in $10/mo steps, each with its monthly queries. Your account RPS is your plan plus add-ons, up to 100.

## Changing plans

Upgrade, downgrade or cancel from the dashboard. Your balance always carries over. The dashboard shows exactly what each change costs before you confirm. Cards and invoices are managed in the billing portal.

Refunds and price changes are covered in the [Terms](https://serpwiz.com/terms).