Flat rate vs. tiered vs. reverse
Most commission plans use one of three shapes. Flat rate is the simplest: one percentage applied to the whole sale. Tiered plans reward bigger sales with a higher rate, but disagree on whether that higher rate applies to the whole sale or just the portion above the threshold — this calculator supports both conventions explicitly, because assuming the wrong one changes the answer by a lot. Reverse flips the question: instead of "what's my commission on this sale," it answers "how big a sale do I need to hit this commission or take-home target."
The tier convention that actually changes your paycheck
Take a plan with three bands: 5% up to $10,000, 7% from $10,000 to $25,000, and 10% above $25,000. On a $30,000 sale:
Same sale, same tier table, a $950 difference — almost 50% more under the flat convention. Neither is "more correct"; real commission plans use both, which is exactly why this calculator makes you choose rather than picking one silently.
Reverse: solving for the sale amount
Both reverse formulas are direct rearrangements of the same relationship:
Both examples above are two views of the same $50,000 sale at 6%: the commission is $3,000 and the take-home is $47,000, so either reverse calculation returns to the same starting number.
Frequently asked questions
How does a flat-rate commission calculation work?
Commission = sale amount × commission rate. A $50,000 sale at a 6% rate gives a $3,000 commission and a $47,000 take-home.
What's the difference between "marginal" and "flat" tiered commission?
Marginal tiering works like a tax bracket: each rate only applies to the slice of the sale inside that band. Flat tiering finds the single band the total falls into and applies that one rate to the entire sale. Real plans use both conventions.
Why do marginal and flat tiering give different totals on the same sale?
Flat tiering pays the higher rate on money that marginal tiering already counted at a lower rate. On the $30,000 example above, marginal gives $2,050 and flat gives $3,000 — a difference from the convention alone, not the numbers.
How do I find the sale amount needed to hit a specific commission?
Sale amount = target commission ÷ (rate ÷ 100). The "Reverse" mode does this for you, and can also solve for a target take-home amount instead.
What commission rate should I use?
This calculator does not assume or suggest a rate for any industry — enter whatever your own agreement or plan specifies. Rates vary enormously by industry and negotiation.
Can this calculate real estate commission splits?
Yes — enter the sale price and your commission percentage in flat-rate mode. If the resulting commission is then split between parties, run that amount back through flat-rate mode with the split percentage.
Does this handle tiered sales-quota bonus structures?
It handles any structure defined by dollar thresholds at different rates, which covers most tiered commission and quota-accelerator plans. It doesn't model plans depending on team totals or multi-period lookbacks.
Can I add more than three tiers?
Yes — use "Add tier" to insert as many bands as needed. The last row is always the open-ended top tier ("and above").