The direct answer
A percentage-rent commercial lease typically combines a fixed base rent with additional rent calculated as an agreed share of tenant sales above a breakpoint. Natural breakpoints can be derived from base rent divided by the percentage-rent rate, while negotiated breakpoints may differ. The signed lease controls eligible sales and exclusions.
Separate base and percentage components
Base rent is usually due regardless of sales; percentage rent is contingent on qualifying sales above the agreed breakpoint. Review audit rights, reporting periods and sales definitions.
To apply the approach to an editable scenario, use the Commercial Rent Calculator. For the neighboring question, explore NNN Lease Calculator.
Calculate the breakpoint consistently
An illustrative natural breakpoint is annual base rent divided by the percentage rate. At $120,000 annual base rent and 6%, the natural breakpoint is $2 million in qualifying sales.
Model sales volatility
Retail tenant turnover can be volatile; underwrite downside sales scenarios and tenant credit independently rather than assuming percentage rent is guaranteed.
Worked example
With $120,000 base rent, a $2 million breakpoint and 6% percentage rent, $2.5 million qualifying annual sales generate $30,000 additional rent. Total annual contractual rent in this example is $150,000.
Common mistakes and limitations
Do not apply the percentage to all gross sales unless the actual lease requires it; the breakpoint and defined sales exclusions matter.
Lease definitions of rentable area, CAM, exclusions, caps and reconciliations vary by contract.
Frequently asked questions
What is a natural breakpoint?
It is the base rent divided by the percentage-rent rate under the standard illustrative formula.
Does percentage rent replace base rent?
Usually it supplements base rent, but the signed lease controls the structure.
Sources and further reading
The article’s examples are illustrative arithmetic. The references below provide context for operating, valuation or transaction concepts; they do not endorse the assumptions or the calculator.
- Office of the Comptroller of the Currency — Comptroller's Handbook — Commercial Real Estate LendingNOI, direct capitalization, cap-rate valuation and DCF concepts for commercial real estate.
- Appraisal Institute — Basic Formulas — Income CapitalizationIncome/cap-rate/value relationships, gross income multiplier and debt-coverage formula references.
Read our editorial policy for the scope of these educational methods.