Commission Calculator: Flat Rates, Tiers and Splits

The arithmetic is trivial. The plan document is where people get caught out, because two schemes that both call themselves a 6% plan can pay very different amounts on identical sales.

Flat, tiered and split

A flat plan is one multiplication. Sell $18,400 at 6% and you earn $1,104, whether that was one deal or forty.

A tiered plan pays different rates on different slices. Say 3% on the first $20,000, 6% on the next $20,000 and 9% above $40,000. On $52,000 of sales you earn 3% of $20,000 ($600), plus 6% of the next $20,000 ($1,200), plus 9% of the last $12,000 ($1,080). Total $2,880, which is an effective rate of 5.54%. Note that the effective rate is well below the 9% top tier, which is exactly the point of the design.

Ask whether the tiers are retroactive

Some plans apply the top rate to every dollar once you cross the threshold rather than only to the slice above it. On the same $52,000 that means 9% of the whole amount, or $4,680, against $2,880 under the sliced version. Same rate table, $1,800 difference. The plan document either says the rate applies to sales in excess of the threshold, or it says the rate applies to total sales. Those five words are worth reading twice.

Using the commission calculator

Enter the sales figure, the rate, and any tier boundaries. If your plan has a split or a draw, apply those after the base calculation rather than trying to fold them into the rate. The sales figure and the rate table both come from your comp plan document, and the tier boundaries are almost always stated per period, so a quarterly threshold does not reset monthly.

Gross sales or net revenue?

Read which one your plan pays on. A month of $50,000 in gross sales with $4,000 of returns and cancellations pays 6% of $46,000, which is $2,760, rather than the $3,000 you would get on gross. A $240 gap on one month becomes nearly $3,000 a year. Discounts often come off the commissionable base too, so a deal you closed by cutting 15% costs you more than 15% of your own pay if the plan also has tiers.

Splits, draws and the tax surprise

Split plans divide one commission across several people. A $420,000 home sold at 5% generates $21,000 in total commission. That splits roughly in half between the listing and buying brokerages, so $10,500 each, and an agent on a 70/30 split with their brokerage takes home $7,350 before expenses. The headline number and the payout are a long way apart.

A draw is an advance. On a $3,000 monthly recoverable draw, a month where you earn $2,100 in commission still pays $3,000, but the $900 difference is owed back against future months. Non-recoverable draws are not clawed back, and the plan will say which type applies.

Withholding is where commission cheques disappoint. In the US, supplemental wages including commission are commonly withheld at a flat 22%, which is a withholding rule and not your actual tax rate. If your marginal rate is lower, the difference comes back at filing. Our salary calculator guide shows how variable pay sits alongside base pay, and if the percentage arithmetic itself is the sticking point, our percentage calculator guide covers the mechanics.

Common questions

How do I work out my effective commission rate? Divide total commission by total sales. The tiered example above pays $2,880 on $52,000, so 5.54%. It is the fastest way to compare two job offers with different rate tables.

Is commission taxed at a higher rate than salary? No. It is withheld differently, often at that flat supplemental rate, but it is taxed as ordinary income like everything else once the return is filed.

What happens if a customer cancels after I am paid? Most plans include a clawback, usually deducted from the next payout. The window matters more than the rule, so check whether it is 30 days or a full year.

Can commission be paid on profit instead of revenue? Yes, and it is common where reps control discounting. Enter the gross margin rather than the sale price and use the margin-based rate from your plan.