Natural and artificial breakpoints: when sales become rent

The natural breakpoint is annual base rent divided by the percentage rate. At that level of sales, the percentage of sales exactly equals the base rent already paid, which is why overage naturally starts there. Above it the tenant pays the stated percentage on the excess; below it, sales reporting does not touch rent.

An artificial breakpoint is any figure the parties negotiate instead. Above the natural point it is a concession to the tenant; below it, the landlord collects overage while base rent is still notionally unearned. Either way the arithmetic stops being derivable and becomes a value to abstract and check.

The arithmetic, and the two ways it is stated

• Natural: breakpoint = annual base rent ÷ percentage rate. Base rent of 240,000 a year at a rate of 6% gives a breakpoint of 4,000,000 in qualifying sales.
• Percentage rent = (qualifying sales − breakpoint) × rate, on the excess only — unless the lease charges the rate from the first unit of sales, which is a different deal.
• Artificial: a stated figure. Once sales clear the natural point, an artificial breakpoint of 3,500,000 against a natural 4,000,000 costs the tenant 30,000 more a year.
• Tiered rates: one rate on the first band above the breakpoint, another above that. Each band needs its own row, not an average.

Same till, two rents

The percentage is the part everyone abstracts. The exclusion list decides the answer. Below, one year of identical trading runs under 2 leases differing only in what they take out of gross sales. Figures carry no currency: the arithmetic is the same in any.

More than 4 times the overage, from the same till, at the same percentage and the same breakpoint. Online orders move fastest of all: a lease drafted before the store became a fulfilment point may capture, or fail to capture, revenue nobody had in mind.

Four fields the abstract needs beyond the percentage

1. The sales definition. What counts as a sale, and whose — the tenant's, its concessionaires', its licensees'. A lease that includes concessions, in a store hosting 3 of them, is not the lease in the summary.
2. The exclusion list, in full, each exclusion as its own line. Reconciliations are argued line by line, and a free-text note cannot be checked against a sales report.
3. The reporting period and cadence. Monthly reports with an annual reconciliation can overcollect in a strong quarter and require a refund; a single annual statement cannot.
4. The reporting deadline and the audit right. When the statement is due, in what form, how long the landlord has to audit, and who pays if the audit finds a shortfall.

Those 4 also decide whether the obligation is live at all. A tenant trading well under the breakpoint still owes the reports, and the deadline is a date like any other — see what counts as a critical date.

Where the calculation quietly goes wrong

• Partial years. A breakpoint stated per lease year needs the lease's proration rule before it touches a stub period; a full-year breakpoint applied to 7 months collects nothing when it should collect something.
• Lease year against calendar year. If the sales report is calendar and the breakpoint is lease-year, someone is reconciling 2 different 12-month windows.
• Base rent steps. A natural breakpoint moves when base rent does, so one stored breakpoint for the whole term is wrong from the first escalation.
• Scanned riders. Exclusion lists often sit in a rider rather than the main body, which is where document handling matters — the trade-off in transcribing the page first or reading the image.

The percentage tells you the rate. The exclusion list tells you what it is a percentage of, and that is where the money is.

What this means for the record and the review

Percentage rent fails the usual confidence model the way conditional rent does: the rate extracts cleanly and scores well, while the exclusion list is prose a person has to read. Treat the rate as verifiable and the definitions as always-reviewed, per what a confidence score on an extracted field means.

The numbers also travel outside the record. A stated breakpoint or overage figure appears in estoppel certificates, and where certificate and abstract disagree the ranking matters — see when the abstract and the estoppel disagree. The same applies to any rent computed rather than scheduled, such as holdover rent and its multiplier.

Mechanically the ongoing work is plumbing more than modelling: a monthly sales file from a point-of-sale system, mapped to the lease's definition of gross sales, reconciled against a breakpoint. That is the principle behind operational automation that survives — run on data the operation already emits, as argued in AI in logistics operations — and the pipeline work described under AI agents and automation. Siblings sit in lease abstraction and document AI, inside our work with real estate teams.

• percentage rent
• retail leases
• breakpoint
• lease abstraction