Commercial Rent Escalation Calculator

Total Lease Cost is calculated entirely from Square Feet, Starting Base Rent, Fixed Annual Increase, and Lease Term -- Estimated CPI never enters that formula. It instead drives a separate hypothetical rent stream used only for Final Year (CPI) and Fixed vs CPI Difference, letting you compare the actual fixed-escalation lease against what a CPI-linked clause might have produced.

It is Total Lease Cost under the entered Fixed Annual Increase minus the total that the same starting rent would have reached growing at Estimated CPI instead, summed across the full Lease Term. A positive number means the fixed escalation clause costs more in total than the CPI-linked comparison rate would have; a negative number means the fixed clause costs less.

No -- because rent compounds at Fixed Annual Increase each year, a longer term adds years where rent has already escalated substantially, so Total Lease Cost grows faster than a simple proportional scaling would suggest. Two leases with the same starting rent and escalation rate but different terms will not differ in total cost by the same ratio as their term lengths.

Final Year Rent is the rent due in the single last year of the lease, after Fixed Annual Increase has compounded for the full term. Average Annual Rent instead divides Total Lease Cost evenly across every year of the Lease Term, so it is always lower than Final Year Rent whenever the escalation rate is positive, since early years cost less than the final escalated year.

No -- it is a comparison assumption you supply, not a prediction the calculator generates. This tool does not forecast future inflation; it simply applies whatever CPI estimate is entered to a hypothetical rent stream so it can be compared against the actual fixed-escalation lease terms.