Commission and Fee Converter

Convert between rate-based, flat-fee, and per-unit commission structures, then compare the equivalent fee, effective rate, basis points, and net proceeds.

Commission structure

Solve from gross amount and commission rate.

Currency display

Gross amount, fee, and net proceeds follow your shared currency and locale preferences.

Result

Enter valid commission details Provide a gross amount above zero and the rate, flat fee, or units and per-unit fee for the selected mode.

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Fees and Commissions

Commission and fee converter: rates, flat fees, and per-unit charges

A commission and fee converter helps you translate the same cost between percentage rates, flat fees, and per-unit charges. Enter the gross amount and whichever fee structure you know, and the calculator shows the matching fee amount, net proceeds, basis points, and per-mille rate so the numbers are easier to compare.

How the calculator converts commission structures

In rate mode, the fee is calculated as a percentage of the gross amount. In flat-fee mode, the entered fee is treated as the total charge and then converted into an implied percentage rate. In per-unit mode, the total fee is the number of units multiplied by the fee charged for each unit.

After the fee amount is known, the remaining outputs are different views of the same underlying charge. Effective rate, basis points, and per mille are all just alternative ways to describe how large the fee is relative to the gross amount.

Commission fee = Gross amount × Rate

Used when the charge is given as a percentage of the transaction value.

Commission fee = Units × Fee per unit

Used when the charge depends on each unit, share, item, or ticket sold.

Effective rate (%) = Commission fee / Gross amount × 100

Converts a known fee amount back into an implied percentage rate.

Why multiple fee expressions matter

Different industries quote fees in different ways. Brokers may disclose percentages or basis points, marketplaces may charge a flat fee plus a variable percentage, and some sales channels use a charge per unit sold. Converting each structure into a common view makes it easier to compare offers and understand what you actually keep.

Basis points are especially useful when the fee is small. A 0.75% fee may look abstract, but 75 basis points often feels easier to compare against another offer at 50 basis points or 120 basis points.

What the outputs tell you

The headline figure is the total fee amount. Net amount shows what remains after the fee is deducted from the gross amount. Effective rate, basis points, and per mille show how heavy the fee is relative to the full transaction value.

If you enter units in flat-fee or rate mode, the calculator also shows the equivalent fee per unit. That is helpful when you want to compare a flat platform charge with another provider that prices each item or transaction separately.

Frequently asked questions

What is the difference between percentage points and basis points for fees?

Basis points are just a smaller scale for the same fee rate. One percentage point equals 100 basis points, so a 0.75% fee is 75 basis points.

 When is a flat fee better than a percentage fee?

A flat fee is often better for larger transactions because the charge does not rise with the gross amount. A percentage fee can be cheaper on smaller transactions. This calculator helps you compare those structures on the same transaction size.

 Why does the effective rate change when I use a flat fee?

Because the flat fee stays constant while the gross amount changes. A £20 fee is 20% of £100, but only 2% of £1,000.

 Does the calculator include taxes or extra platform charges?

No. It only converts the fee structure you enter. If a service also charges taxes, handling fees, or payment-processing costs, those should be added separately in your comparison.

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