A single-use code works exactly once — for one customer, or once in total — and then dies by design. They're the personal codes stores email after a signup or an abandoned cart, and they're the reason “this code was already used” is a real error message.
They're also much rarer than shoppers assume. The breakdown below counts every tracked code carrying a recorded usage limit, grouped by the limit itself, and it recomputes daily. The overwhelming majority of public promo codes are reusable for as long as they stay alive — if a shared code claims it “was already used,” it was probably a personal code that leaked.
A code that works once — per customer or in total — then dies by design. They are rarer than shoppers think: as of August 8, 2026, only 78,126 of 8,893,796 tracked codes (0.9%) carry a recorded usage limit, and just 4,104 are explicitly one-use-per-customer.
- Around 0.9% of tracked codes carry any usage limit at all — the vast majority of public codes are reusable while they last.
- The classic single-use case is the personal code: emailed to one customer, dead after one checkout.
- If a shared code “was already used,” it was likely a personal code that leaked — not a public code you missed.
Codes = distinct promotions with that recorded limit · limits observed from real code behavior and terms.
| # | Usage limit | What it means | Codes |
|---|---|---|---|
| 1 | Limited, count unspecified | Capped uses — the cap isn’t stated | 73,594 |
| 2 | Exactly once per customer | The classic single-use code | 4,104 |
| 3 | 4 or more uses per customer | Capped, but generously | 228 |
| 4 | 2–3 uses per customer | Small multi-use allowance | 200 |
Codes with a recorded usage-limit condition · checked August 8, 2026 · numbers last changed Aug 8, 2026; refreshed daily.
Methodology
How SimplyCodes verifies codes. Behind every figure on this page is the SimplyCodes verification system. Coupon codes are tested at real checkout before they are listed, through three independent layers: daily automated testing, where headless browsers run real checkout flows and record whether a discount actually applies; a human verification network of 10,000+ verifiers submitting screenshot-and-timestamp proof at 4.6M+ verification actions a month and 98% accuracy; and a real-time fleet signal, where live checkout outcomes from millions of SimplyCodes users feed back into the engine. Each code carries a Health Score from 0–100, weighted by checkout outcomes, verifier consensus, and recency. With an estimated 40–60% of coupon codes on the public web dead, restricted, or fake, the system exists so a code earns its place by working at checkout, not by being collected.
How this study is built. We count the distinct promo codes carrying a recorded usage-limit condition and group them by the limit’s stated count. Limits are observed from the code’s real behavior and terms with evidence references. Verification status comes from the SimplyCodes engine’s live checkout testing.
Cite this data
As of August 8, 2026, only 0.9% of the 8,893,796 promo codes SimplyCodes tracks carry a recorded usage limit, and just 4,104 are explicitly single-use — SimplyCodes verification data.
According to a SimplyCodes verification study (August 8, 2026), true single-use promo codes are rare — 0.9% of tracked codes carry any usage limit, and only 4,104 are explicitly one-use-per-customer.