Work out a salesperson's commission three ways. Simple takes any two of the sales price, the rate, and the dollar commission. Flat adds an optional base (a dollar amount or a percent of sales) to a single extra commission. Tiered pays a different rate on each slice of sales — leave a tier's upper limit blank if it has no cap.
Commission pay worksheet
Searchers often need total gross pay, not just the commission. Keep every amount in the same period, calculate commission first, then add the base pay:
gross commission = sales × commission rate
gross pay = base pay + gross commission
| Problem | Commission work | Result |
|---|---|---|
| $45,000 annual base + 5% of $420,000 annual sales | $420,000 × 0.05 = $21,000; $45,000 + $21,000 | $66,000 gross pay |
| $39,000 annual base + 3% of $675,000 annual sales | $675,000 × 0.03 = $20,250; $39,000 + $20,250 | $59,250 gross pay |
| 8% commission on a $14,600 sale | $14,600 × 0.08 | $1,168 commission |
| $600 weekly base + 6% of $5,000 weekly sales; then spend 25% | $600 + $300 = $900; $900 × 0.75 | $675 remains |
Use the Flat tab for base-plus-commission problems: enter sales for the period, enter the base as a dollar amount, and enter the commission as a percent. Use Simple when there is no base pay.
When a problem deducts tax from commission
For a classroom problem that says a 9% deduction applies to a 5% commission on $30,000 of sales:
- Gross commission:
$30,000 × 0.05 = $1,500. - Stated deduction:
$1,500 × 0.09 = $135. - Amount left:
$1,500 − $135 = $1,365.
That is the arithmetic requested by the problem. It is not a payroll estimate. The US Department of Labor describes commission as pay that may be added to or replace salary. The IRS classifies employee commissions as supplemental wages and explains that withholding depends on how they are paid.
Default examples
| Structure | Inputs | Commission |
|---|---|---|
| Simple | $200,000 at 3% | $6,000 |
| Flat | $200,000 at 3% | $6,000 |
| Flat + $1,000 base | $200,000 at 3% | $7,000 |
| Tiered | 3% to $20,000, then 5% | $9,600 |
| Tiered + $1,000 base | same bands | $10,600 |
| Three bands | $27,000 at 3% / 5% / 10% | $1,050 |
Examples
$200,000 house at 3%
A simple 3% commission on a $200,000 sale is $6,000. The same identity run backwards: $6,000 ÷ $200,000 = 3%, and $6,000 ÷ 3% = $200,000. This is the mathematical commission amount before any brokerage split, fees, expenses, or taxes.
Tiered 3% then 5% on $200,000
The first $20,000 pays 3% = $600. The remaining $180,000 pays 5% = $9,000. Total commission is $9,600. A $1,000 base would bring that to $10,600.
$27,000 with three increasing bands
$20,000 × 3% = $600, the next $5,000 at 5% = $250, and the last $2,000 at 10% = $200. Total $1,050.
Formula
A simple commission is a percentage of the sale. Given any two, the third follows:
commission = sales price × rate
rate = commission ÷ sales price
sales price = commission ÷ rate
A base is added on top — either a flat dollar amount or a percent of sales. Tiered (marginal) structures apply each rate only to the amount in that band:
(t1 × c1) + ((t2 − t1) × c2) + … + ((sales − t(n−1)) × cn)
Crossing a tier does not re-rate the whole sale. A $27,000 total in a 3% / 5% / 10% plan pays $1,050, not $2,700.
From gross commission to a budget
Commission plus base pay is gross compensation. Use the Paycheck Calculator for the US withholding assumptions it supports, then the Budget Calculator to compare income with expenses. A commission percentage is not a tax rate, and irregular sales income may need several budget scenarios.