How to Calculate Sales Commission

Commission ties a portion of your pay to how much you sell. Most plans combine a fixed base salary with a variable commission, so your earnings rise when your sales rise. Some roles are commission only, while others add a base to smooth out slow months.

The core formula is simple: commission equals sales volume multiplied by the commission rate, then you add any bonus and base pay. If you sell 40,000 dollars at a 5 percent rate with a 1,000 dollar base, your commission is 2,000 dollars and your total pay is 3,000 dollars.

Sales volume is the total dollar value of what you sold in the period. The commission rate is the percentage of that volume you keep, so it must be entered as a percent such as 5 for 5 percent. Base pay is any guaranteed salary that is paid regardless of sales.

A bonus is a fixed extra amount, often awarded for hitting a target or closing a specific deal. Because bonus and base are flat dollar figures rather than percentages, they are added after the rate is applied to your sales volume.

The calculator lets you enter each figure and see commission and total pay update immediately, which makes it easy to compare different sales targets or plan structures.

A flat plan applies one rate to every dollar of sales, which is the easiest to predict. A tiered plan raises the rate after you pass a threshold, so the first band of sales might pay 4 percent while everything above a target pays 6 percent. To model a tier, calculate each band separately and add the results.

A draw against commission gives you an advance that is later subtracted from what you earn. If your draw exceeds your commission, you may owe the difference back, so it is worth tracking both numbers. Whatever the structure, the underlying math is always sales times rate plus any base and bonus.