Brokerage and Trading Fees Calculator
Estimate what a broker's trading and account fees cost each year, for the number of trades you make.
Enter 0 if your broker charges no flat fee.
For example, FX or spread charges. Enter 0 if none.
- Fees per year
- $650.00
- Cost of each trade
- $15.00
Each trade costs $15.00 in fees, so 40 trades a year plus the custody fee cost $650.00. Taxes and any spread are not included unless you enter them.
How it is calculated
Cost per trade = flat commission + amount × percentage fee; annual cost = cost per trade × trades + custody fee
Example: 40 trades of $2,000, with $5 commission and 0.5%, plus a $50 custody fee, cost $650 a year.
Assumptions and limitations
- Fees are the amounts you enter. Check the broker's current fee schedule, which can change.
- Spreads, currency conversion and taxes are not included unless you add them as fees.
- Fees matter most when trades are frequent or small.
Why trading fees add up
A trading fee looks small on a single transaction, but investors who trade often can pay a surprising amount over a year. Brokers charge in different ways: a flat commission per trade, a percentage of the amount traded, a monthly or yearly account or custody fee, and charges for currency conversion or for the spread between buying and selling prices. This calculator adds these into a single estimate for your own pattern of trading.
Comparing brokers on headline commission alone can be misleading. A broker with no commission may charge more in spreads or currency conversion, while a broker with a per-trade fee may be cheaper for large, infrequent trades. Calculating the total for your own trades is the only reliable way to compare them.
How the calculation works
The calculator works out the cost of one trade as the flat commission plus the trade amount multiplied by the percentage fee. The annual cost is that cost multiplied by the number of trades, plus any yearly custody or account fee. The formula is simple, which makes it easy to check against a broker's fee schedule.
A worked example
Suppose you make 40 trades a year of 2,000 each, with a flat commission of 5 and a percentage fee of 0.5%, and pay a 50 yearly custody fee. Each trade costs 5 plus 10, which is 15. Over 40 trades that is 600, and adding the custody fee gives 650 a year. The percentage fee is the larger part here, which shows why the percentage can matter more than the flat charge.
Fees that are easy to miss
Spreads are the gap between the price you can buy at and sell at. Because the spread is not shown as a fee, it can be overlooked. Currency conversion charges apply when you buy shares priced in another currency, and they are often quoted as a percentage of the amount converted. Inactivity fees, transfer-out fees and fees for paper statements are also common. Check the full schedule before you decide.
Turning the result into a decision
Use the annual figure to judge the cost as a share of what you invest. Fees that look trivial on a large portfolio can be a noticeable share of a small one, and a fee that is fixed each year weighs more heavily on a small balance. If your trading is frequent, the per-trade cost is the figure to watch.
Remember that a lower fee is not the only consideration. Execution quality, the range of investments offered, the quality of the platform, and the protection given to client money matter too. Fees are one input among several.
What the calculator does not include
Taxes on gains and dividends are not included, and neither are changes in the share price or the cost of any financing. The calculator uses the fees you enter, so check that they match the broker's current schedule, because fees change. Spreads are not estimated unless you add them as a percentage.
Checking your own trading pattern
Look back at your last year of statements and count the trades, the fees and any account charges. Compare that total with the cost estimated here, using the number of trades you actually made. If the real figure is higher, the difference may come from spreads, currency conversion or inactivity charges, which are easy to miss on a monthly statement. Reviewing the pattern once a year shows whether a cheaper platform or a less frequent approach would save money.
Frequently asked questions
Which matters more, the flat commission or the percentage fee?
It depends on the size of your trades. For small trades the flat commission usually dominates; for large trades the percentage fee often costs more. Enter your typical trade to see which applies to you.
Does this include the spread?
Only if you add the spread as a percentage in the percentage fee field. Spreads are not shown as fees by most brokers, so they are easy to miss.
Why include a custody or account fee?
Some brokers charge a yearly or monthly fee for holding investments or keeping an account open. It is a fixed cost that matters more when your balance is small.
Are currency conversion charges included?
Only if you enter them as a percentage fee. Conversion charges apply when you trade shares priced in another currency, and they can be substantial over a year.
How often should I check the fee schedule?
Check it before you open an account and again each year, because brokers change their fees. A cheaper provider today may not stay cheaper.