For most people, no: waiting for a better rate is not worth it. The exchange rate moves only a little from one day to the next, often well under 1%, and nobody can reliably guess which way it will go. The gap between a cheap provider and an expensive one is several times bigger than a normal day's move, so the single biggest saving comes from picking a low-cost provider, not from timing the market.
There is one timing rule that does matter: some providers add a markup on weekends, so avoid exchanging on a Saturday or Sunday with those.
- The rate barely moves day to day. On a normal day the US dollar to euro rate shifts only a few tenths of a percent, often well under 1%, so there is little to gain by waiting.
- You can't predict the direction. Rates react to news nobody sees coming, so waiting for a better rate is a coin flip, not a plan.
- Provider choice matters far more. A cheap provider costs about 0.4% while a bank hides about 3% in the rate. That gap is several times a normal day's move.
- The one real timing rule: skip weekends. Some providers, Revolut among them, add a markup on Saturday and Sunday, so convert on a weekday instead.
The rate moves less than you think
Right now $1 buys 0.863148 euros at the mid-market rate. That number changes constantly, but not by much. On a typical day the US dollar to euro rate drifts a few tenths of a percent, and a move of more than 1% in a single day is the exception, not the rule.
On a $1,000 transfer, a 0.5% swing is $5. That is the whole prize for timing the market perfectly, and you only collect it if you guess the direction right. Rates react to inflation reports, central bank decisions, and headlines nobody schedules in advance, so "wait for a better rate" usually means "wait and hope." If you wait a week and the rate moves in your favour, you have gained a few dollars. If it moves against you, you have lost the same.
Provider choice dwarfs the daily move
Now compare that $5 to what the provider charges. On a $1,000 transfer, Wise costs about $3.44 all-in, near 0.34%. A typical bank hides about 6.40% in the rate, roughly $30 on this same transfer, before any wire fee. The gap between the cheap option and the expensive one is several times bigger than a normal day's rate move.
The table makes the point better than any chart of rate history. Switching from a bank to a low-cost provider saves a fixed, guaranteed amount every single time you send. Timing the market offers a maybe-$5 gain you can't count on. One is a decision you control. The other is a guess.
The one timing rule that matters: skip weekends
There is one timing effect that is real and predictable: some providers change pricing while currency markets are closed. Revolut is a prominent example, but its out-of-market-hours charge varies by country and plan. Check the terms shown in your app, and wait for the next weekday when the exchange is not urgent.
Unlike the daily rate, this one you can plan around. The markup catches people who set up a transfer over the weekend because that's when they have a free moment. Send on a weekday and the problem disappears.
When watching the rate does make sense
None of this means the rate never matters. It does, and the bigger the transfer, the more a move is worth. A 1% swing on $1,000 is $5, but on $50,000 it is $500, which is real money. If you are moving a large sum and the rate is unusually volatile, it can be worth watching for a few days.
The catch is that you still can't predict direction, only react to it. A practical middle ground is to set a target rate instead of staring at a chart. When a large exchange will fund an investment, trade or currency hedge inside Interactive Brokers, its low commission can save more than guessing a small market move. Use a transfer provider when somebody else must receive the payment directly.
A simple rule
Sending a normal-sized transfer? Use a low-cost provider and don't wait. Run your amount through the comparison tool, then choose the highest-ranked transfer provider that supports your recipient and payment method. Our guide to cutting FX fees explains how the hidden markup works.
Using Revolut or another provider with a weekend markup? Convert on a weekday. If you must send on a weekend, switch to a provider with no surcharge. Our Wise vs Revolut guide compares the two head to head.
Moving a large sum in a volatile market? Price Interactive Brokers when the conversion is part of investing, trading or hedging in that account; get transfer-provider quotes when paying somebody else. Then choose an order strategy. Timing is a small bonus, not the main saving. If the terminology is new, start with the mid-market rate guide.
Frequently asked questions
Does the exchange rate change during the day?
Yes, constantly. The rate is set by trading that never stops during the working week, so it ticks up and down all day. But the daily range on a popular route like US dollars to euros is usually well under 1%, which is small next to what a provider charges you.
Is there a best day of the week to exchange currency?
Not for the rate itself, no. Weekdays and weekends see similar rates. The real difference is that some providers add a weekend markup when markets are closed, so a weekday conversion with those providers costs less. The day matters because of the provider, not the market.
Should I wait for the rate to improve before sending money?
Usually no. You can't predict which way the rate will go, and a normal day's move is worth only a few dollars on a typical transfer. The guaranteed saving from switching to a low-cost provider is several times larger, so send when you need to and pick the cheaper provider.
Sources: ECB exchange rates (opens in a new tab), Wise pricing (opens in a new tab), Revolut exchange fees (opens in a new tab), Interactive Brokers commissions (opens in a new tab), IBUK and IBLLC Client Agreement (opens in a new tab). Accessed 22 August 2026.