By: Jess Vento
A lease amortization schedule is a period-by-period table showing each lease payment, the interest on the lease liability, lease expense, and the remaining right-of-use asset and lease liability balances. Under ASC 842, build it from the lease liability at commencement, then apply the discount rate and payment schedule for every period of the lease term.
The value of an intangible asset decreases over time in a process called “amortization.” This process is based on an asset’s historical cost, estimated economic life, residual value, and the amortization method chosen.
Lease amortization, then, is the reducing the value of an intangible asset in a lease over the course of the agreement. While the term “amortization” refers to the decrease in an intangible asset’s value over time, “depreciation” refers to the decrease in a physical asset’s value over time. In this case, the intangible asset is the lease itself, not the underlying asset that is being leased.
If your books follow FASB ASC 842, lease amortization is calculated differently depending on whether you have a finance vs. operating lease. For GASB 87 and IFRS 16, all leases are effectively considered finance leases for lessees; there is no concept of an operating lease.
For a finance lease, which means the characteristics of the lease make it similar to purchasing the underlying asset, an interest expense must be considered for the remaining lease liability. For operating leases, only the straight-line lease expense is considered.
For those operating leases, amortization expense can be thought of as a “plug” number. While unusual in accounting, it’s true in this situation! When accountants balance the debits and credits, all of the numbers are calculated and amortization expense is the “remainder.”
When calculating numbers for any reporting period, start with the lease liability, which is always the present value of future lease payments. Interest expense (for finance leases) is calculated on the outstanding liability for the month. Lease expense is a straight-line calculation of all lease payments of the life of the lease (determined at the beginning of the lease). The initial right of use (ROU) asset is the initial lease liability plus initial direct costs and less incentives received. The ROU asset is then reduced - or amortized - monthly until the last payment. If there is no residual asset value, the ROU asset value ends at zero.
Let’s use an example operating lease to help understand the concept. For this example, the lease is for office space within an office building. The lease begins March 1, 2022 and is a 60-month lease we are not reasonably certain to renew and we’re going to use the risk-free rate as the rate implicit in the lease is not readily available. The monthly rent is $7,500 that increases 3% annually. For this lease, there are no initial direct costs or incentives received. This gives us a lease liability of $452,048.88 and ROU Asset of $459,548.88.
A lease amortization schedule is a table that shows lease payments as well as interest and amortization calculations, typically on a monthly basis, for the entire term of a lease. Lease schedules are often prepared at the inception of a lease, as they are utilized as a guide for projected payments over the course of a lease.
For example, an accountant will often use a lease amortization schedule as a reference to ensure that payments, interest, and amortization are properly recorded on financial statements throughout the term of the lease.
Building an amortization schedule, when not built by lease accounting software, most frequently begins in Excel.
To begin building your amortization schedule, you must start with the ROU asset and lease liability calculations and go from there:
For our example lease above, the following shows our monthly recording of the interest on remaining lease liability and the monthly operating lease expense. The monthly expense may be different from the monthly lease payment as we are now including interest as part of the operating lease expense, different from how operating leases were handled under ASC 840.

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Lease commissions paid only because the lease was signed are initial direct costs. They are added to the ROU asset and amortized with it over the lease term.
Under ASC 842, every lease recognized on the balance sheet has a right-of-use asset that is amortized. For operating leases and most finance leases that is over the lease term; a finance lease that transfers ownership, or has a purchase option the lessee is reasonably certain to exercise, is amortized over the asset's useful life. Short-term leases a lessee elects to keep off the balance sheet are not amortized.
Yes. Some people think operating leases do not have to be amortized, but under ASC 842 the ROU asset for an operating lease is amortized over the lease term.
A lease amortization schedule is a table that shows, period by period, the lease payment, interest on the lease liability, lease expense, and the remaining balances of the right-of-use asset and lease liability for the full lease term.
Most schedules include the date or period, lease payment, interest expense for finance leases, amortization expense, operating lease expense, ROU asset balance, and the short-term and long-term lease liability.
Yes. Start with the lease liability and ROU asset at commencement, add a row for each period, and use formulas for interest and amortization. Crunchafi Lease Accounting generates the schedule automatically and exports it to Excel.