FX always looks simple. There is a rate. You convert at that rate.
This came from a routine need: move USD into the UK to fund GBP expenses.
No optimisation exercise. Just a transfer that had to happen.
Amount: $11,100
Date: April 2026
Baseline: HSBC FX rate at the time
Execution: Wise
The goal was simple: measure the actual cost of the rate being offered.
What HSBC was offering
At the time of execution:
Market rate (independent sources): ~1.355–1.356 USD/GBP
HSBC quoted rate: ~1.3897 USD/GBP
That gap is the cost.
It just isn’t presented that way.
Implied spread
~2.5%
(1.3897 ÷ 1.3554 − 1)
On $11,100:
Expected loss: ~$275
This is not shown as a fee. It is embedded in the rate.
This isn’t specific to HSBC
The same pricing structure applies across retail banks in both the US and UK.
International wire fees are often low or waived. The cost sits in the exchange rate.
Across major banks, FX margins typically fall in the ~2% to 4% range on common currency pairs like USD/GBP.
HSBC’s pricing in this example is representative.
The Wise execution
Instead of converting inside HSBC:
Wire USD from HSBC (US) → Wise USD balance
Convert inside Wise
Send GBP to UK account
Costs observed
Wire fee (HSBC): $6.11
FX fee (Wise): $36.51
The actual conversion
USD sent: $11,100
GBP received: £8,162.22
Wise showed:
Rate: 1 USD = 0.7378 GBP
Equivalent: ~1.3554 USD/GBP
This matched the market rate at the time.
Wise conversion at execution: $11,100 → £8,162.22 at ~1.3554, with a $36.51 fee and no additional spread
Verifying the math
Wise deducts its fee before conversion.
Step 1: Net USD converted
11,100 - 36.51 = 11,063.49
Step 2: Apply FX rate
11,063.49 × 0.7378 ≈ 8,162.22
There is no hidden spread.
What did it actually cost?
FX cost (Wise only)
36.51 / 11,100 = 0.33%
All-in cost (including wire)
42.62 / 11,100 = 0.38%
Effective rate comparison
Including all costs:
11,100 / 8,162.22 = 1.3599
Compare to market (~1.3554):
Difference: ~0.33%
That matches the fee.
HSBC vs Wise
HSBC | Wise | |
|---|---|---|
FX rate vs market | ~2.5% worse | 0% markup (mid-market) |
Explicit fees | Hidden in rate | $36.51 |
Total cost on $11.1k | ~$275 | $42.62 |
All-in % cost | ~2.5% | ~0.38% |
The process
Step 1
Send USD to Wise (wire or ACH)
Step 2
Convert inside Wise at mid-market rate
Step 3
Send GBP to UK account
In this case, the GBP transfer was immediate and free.
What this shows
The key point is not that Wise is cheap.
The key point is that the real cost of FX is about 0.3 to 0.5 percent.
The rest is margin.
Banks are not charging you a fee. They are selling you a worse price.
A quick note on Revolut
Revolut can look similar on small amounts, but its pricing depends on plan, timing, and usage limits.
Once you move beyond monthly allowances or outside weekday hours, additional markups apply.
Wise’s pricing does not change.
Caveats
Rates move constantly. Expect small variations around these numbers.
Very large transfers can sometimes get improved bank pricing, but still rarely approach mid-market.
Account tier matters. Premium banking relationships may narrow the spread, but do not eliminate it.
First-time transfers through Wise can trigger verification checks, especially above $10,000.
Where This Shows Up
On $11,100, the difference was about $230.
Scale that:
$50,000 → ~$1,000 difference
$100,000 → ~$2,000+ difference
If you move money internationally even a few times a year, this becomes material very quickly.
Bottom line
HSBC: ~2.5% embedded spread
Wise: ~0.3% explicit fee
Same outcome, very different cost structure
This isn’t a niche optimization. It is simply the correct mechanism.