Fixed rate or floating: which to choose
Updated 11 September 2026 · compiled by the editorial team from the services' own pages
A floating rate follows the market until the transfer confirms; a fixed one locks the quote for a window. The fixed one usually costs a little more — that difference is the price of certainty.
Rule of thumb: floating for small amounts and fast networks, fixed when the amount matters or the network is congested.
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Services that support this
| # | Service | Score | What you get | |
|---|---|---|---|---|
| 1 | Changellyinstant exchange | 98/100 | no account, fixed rate, wide networks | Read review |
| 2 | ChangeNOWinstant exchange | 98/100 | no account, fixed rate, wide networks | Read review |
| 3 | SwapScopeinstant exchange | 95/100 | no account, fixed rate, wide networks | Open |
| 4 | SimpleSwapinstant exchange | 95/100 | no account, fixed rate, wide networks | Read review |