Benchmarks reviewed 2026-07-08.
The four common escalation structures
Commercial leases raise rent over the term in one of a few ways: a fixed percentage each year, a fixed dollar step ($/SF), a CPI-linked bump tied to inflation, or a custom schedule negotiated year by year. This calculator builds the full schedule for any of the four, applied every year or every N years.
Fixed vs CPI: who carries inflation risk
A fixed percentage or step gives both sides certainty — you know the rent in year 10 on day one. A CPI clause shifts inflation risk to the tenant: if inflation runs hot, so does your rent. Caps and floors split that risk, which is why most CPI clauses have both. Market-standard fixed escalations run 2.5–3.5%/yr (about 3% is most common); CPI clauses are usually capped at 3–5% annually with floors of 1.5–2.5% (Appendix A.6).
fixed %: rate(y) = start × (1 + pct/100)^k
fixed step: rate(y) = start + step × k
CPI: g = clamp(CPI, floor, cap); rate(y) = start × (1 + g/100)^k
(k = periods elapsed = floor((y − 1) / frequency))Caps, floors and how they’re negotiated
Two levers matter. A CPI cap/floor bounds the annual inflation rate before it’s applied. A separate rent-increase cap ceilings how much the rent itself can climb year over year — and it comes in two flavors. A cumulative cap lets the landlord bank unused escalation from low-inflation years and apply it later, which can produce a sudden jump in a single year. A non-cumulative cap limits each year to the ceiling with no carryover, giving the tenant more protection. The two only diverge when annual increases are uneven, but over a 10-year term the difference adds up to meaningful dollars — which is why tenants who want budget predictability push for non-cumulative. Toggle the two here (or try a custom schedule) to see the gap.
Worked example
$28.00/SF starting rent escalating 3%/yr over a 10-year, 4,000 SF lease reaches $36.53/SF in year 10, for a total obligation of $1,283,954. To see how those escalations stack on top of pass-through costs, pair this with the NNN Lease Calculator and the CAM Charges Calculator.
Reading an escalation clause
Look for the mechanism (percent, step, CPI, or a stated schedule), the frequency, the base the increase compounds off, and any caps or floors. If the clause is CPI-linked, confirm which index and how it’s trued up. Investors capitalizing the income stream can carry the escalated NOI into the Cap Rate Calculator.