Spain
Mexico
Brazil
Poland
Taiwan
Philippines
South Korea
The essentials
- A one-time fee and an annual fee with the same percentage have different long-term effects.
- Under a simplified 20-year illustration, 10,000 units becomes 25,297.68 at net 4.75% or 21,911.23 at net 4%.
- The example isolates costs under fixed assumptions; it does not forecast investment or stablecoin returns.
Identify when a charge repeats
A transaction fee is triggered by an action, such as buying, selling, or converting. An ongoing fee can recur while an account or investment remains open. A quoted percentage is incomplete without its frequency and calculation base: 1% once on a purchase is different from 1% of assets every year.
Costs can also sit at different layers. A service may charge for the account, an underlying product may have expenses, and a transaction may carry a separate spread or processing charge. Read the fee schedule together with statements and product disclosures so a prominently advertised zero does not obscure another applicable cost.
Set the assumptions before calculating
For a purely hypothetical illustration, start with 10,000 units and assume 5% gross growth every year for 20 years. Make no further deposits or withdrawals and ignore taxes, inflation, and market fluctuations. These invented inputs show how costs interact with compounding; they are not a forecast for an investment, stablecoin, or card balance.
Use a deliberately simplified timing convention: each year’s gross gain and annual fee are both calculated on the opening balance and applied at year-end. The net rate is therefore 5% minus the fee rate. An annual fee of 0.25% gives 4.75% net; 1% gives 4% net. Real products may calculate or deduct fees differently.
Follow the balance through 20 years
The formula is ending balance = 10,000 × (1 + net annual rate)^20. With no annual fee, it produces 26,532.98 units. With a 0.25% annual fee, it produces 25,297.68; with a 1% annual fee, 21,911.23. Values are rounded only at the end, to two decimal places.
The difference between the two fee-bearing cases is 3,386.44 units, using unrounded balances before the final rounding. This is not simply a sum of billed fees: money removed for fees also stops participating in subsequent growth. Under the illustration’s identical gross return, repeated charges produce a widening difference in the amounts left invested.
| Annual fee on opening balance | Simplified net annual rate | Balance after 20 years |
|---|---|---|
| 0% | 5% | 26,532.98 units |
| 0.25% | 4.75% | 25,297.68 units |
| 1% | 4% | 21,911.23 units |
Why a one-time 1% charge is different
Suppose instead that 1% is taken only at the start, leaving 9,900 units, with no ongoing fees. Under the same hypothetical 5% annual growth, 9,900 × 1.05^20 = 26,267.65 units. The effect lasts through the smaller starting balance, but the 1% charge itself is not imposed again every year.
Timing also matters for recurring percentages. If a 1% fee were charged on the balance after a 5% gain, the one-year multiplier would be 1.05 × 0.99 = 1.0395, or 3.95% net, rather than the table’s 4%. Daily deductions, average-balance calculations, fixed charges, or tiered prices require their own model.
Connect the percentage to actual use
For a practical cost comparison, specify the amount held, expected number of transactions, holding period, and exit route. A fixed 5-unit fee is 5% of a 100-unit transaction but 0.1% of a 5,000-unit transaction. A recurring subscription instead depends on how many periods you keep it and how you allocate it across use.
Include relevant conversion spreads and network or withdrawal charges without double-counting costs already included in a quoted net figure. Compare service scope and access conditions as well as cost; a fee alone cannot establish quality or risk.
Official sources
An explanation of financial mechanics based on official sources. Hypothetical calculations are not actual trading results or forecasts.
