Proxy traffic is sold in gigabytes, and what happens to the gigabytes you don't use depends on the plan, not on the type of proxy. Subscriptions usually reset each month; prepaid pay-as-you-go traffic from some providers never expires; and some providers sit in between, with rollover or a fixed validity window.

The three kinds of plan you will see

  1. Monthly subscription. You pay every month for a set number of GB. Anything left at the end of the billing period is usually lost, though some providers let a share roll over while the subscription stays active.
  2. Prepaid pack with a validity period. You buy GB once, but they must be used within a stated time, such as 30, 60 or 90 days, or 12 months.
  3. Prepaid pack that never expires. You buy GB once and use them whenever you like. The price per GB is the only thing that matters.

How to check before you buy

  • Read the pricing page and the terms for the words expires, valid for, resets or rollover. If none appear, ask support and keep the answer in writing.
  • Check whether "pay as you go" on that site means a one-off purchase or a small monthly plan.
  • Look at what happens if you cancel: on some subscriptions, unused or rolled-over traffic disappears when the plan ends.
  • Compare the cost of what you will actually use, not the headline price per GB. A cheaper monthly rate that you only half use can cost more than a dearer pack that never expires.

Common mistakes

  • Buying a big pack for a discount and then losing half of it at the month's end.
  • Forgetting auto-renewal on a subscription you only needed once.
  • Ignoring paid extras. Some providers charge more per GB for city or ISP targeting, which changes the real price.

Which kind should you choose?

If your use is steady and predictable every month, such as continuous price monitoring, a subscription can be the cheapest option, provided you use what you pay for. If your use is irregular (a project now, nothing for weeks, then a burst), traffic that never expires avoids waste. Several providers sell non-expiring traffic; compare their prices per GB, targeting options and payment methods, and read each one's terms.

How ProxyFall handles it

Disclosure: ProxyFall is built and run by Quantumines, the studio that publishes this answer.

ProxyFall sells residential and datacenter proxies as prepaid traffic with no subscription. The GB you buy never expire: no monthly reset and no rollover rules.

QuestionProxyFall
Does traffic expire?No. Buy GB once and use them whenever you want
Residential priceFrom $0.99/GB (1–49 GB) down to $0.86/GB (1,000+ GB)
Datacenter priceFrom $0.69/GB (1–49 GB) down to $0.58/GB (1,000+ GB)
TargetingCountry, state, city and ISP targeting at no extra cost; sticky IPs for up to 24 hours
PaymentCard (2.9% + 30¢ card fee) or USDT, USDC or BTC, into a prepaid balance from $5
Trial250 MB of residential traffic free with the first deposit (minimum $5)

Static ISP proxies are the exception: they are sold per IP per month with unlimited bandwidth, so there is no traffic to expire.

Facts from proxyfall.com, checked on 5 November 2026.

New to proxy terms? See the proxy glossary.