What is the difference between fixed and CPI escalation?

A fixed escalation raises rent by a set percentage each year regardless of inflation. A CPI escalation ties the increase to the Consumer Price Index, so the percentage varies with actual inflation. Both compound on the prior year's rent; this tool lets you model an assumed percentage for either.

Why does compounding matter so much?

A 3 percent annual bump compounds, so by year ten the rent is about 30 percent above year one, not 27 percent from simple addition. Over a long term the compounded total can be tens of thousands more than a naive estimate, which is why projecting the full schedule is important.

Should I model this on total rent or per square foot?

Either works as long as you are consistent. Enter the annual base rent or the annual rent per square foot times the area as the starting rent. The escalation percentage and term apply the same way and the total reflects whichever basis you entered.

Does this include operating expenses or CAM?

No. This projects base rent only. Triple-net leases add common-area maintenance, taxes, and insurance that also tend to rise. Add those separately to get a full occupancy-cost picture, since they are often passed through without a cap.

How do I compare two leases with different escalations?

Run each lease through the calculator and compare the total lease cost over the same term. A lower starting rent with a steeper escalation can end up costing more than a higher starting rent with a flat bump, which only the full projection reveals.

Commercial Lease Rent Escalation Calculator

Commercial rent rarely stays flat. Annual escalations — fixed percentage or CPI-linked — compound over a multi-year term and can add a large amount to total occupancy cost. This calculator projects each year’s base rent and the cumulative total so you can budget accurately and compare lease options on equal terms.

How it works

Each year’s rent compounds on the previous year’s rent at the escalation rate:

year 1 rent = starting rent
year n rent = starting rent × (1 + escalation)^(n − 1)   (compounding)
total cost  = sum of all yearly rents over the term

With simple (non-compounding) escalation, each year’s increase is a flat percentage of the original year-one rent instead. The tool supports both and sums the schedule to a total lease cost.

Example and notes

A 50,000 per year lease over 10 years with a 3 percent compounding escalation rises to about 65,200 in year 10 and totals roughly 573,000 over the term — about 73,000 more than 10 flat years at 50,000. Compare two offers by their total over the same term: a lower start with a steep bump can beat a higher flat rent only in the early years. This projects base rent only — add CAM, taxes, and insurance separately for triple-net space.