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As governments implement GASB Statement 87, Leases, it has become apparent that one of the challenging aspects of the new rules is the calculation of the appropriate discount rate. Under the new guidance, a lessee government will recognize a lease liability and an intangible right-to-use lease asset at lease commencement. Similarly, a lessor government will recognize a lease receivable and a deferred inflow of resources at lease inception. The discount rate used can materially affect the valuation of the lease liability or receivable and right-to-use asset or deferred inflow recognized. The higher the discount rate is, the lower the lease liability or receivable will be; the lower the discount rate is, the higher the lease liability or lease receivable will be. Determining the discount rate will be a significant area of judgment for governments.

Effective Date Statement 87 (as amended) > Fiscal Years beginning after June 15, 2021

Do not underestimate the time required for this critical step in lease implementation. Detailed documentation will be required to support the judgments used to determine the discount rate.


Lessees must discount lease payments using the interest rate at which the transaction is made, i.e., the rate the lessor charges the lessee, which may be the rate implicit in the lease. Determining the rate implicit in the lease is challenging because that rate is an internal measure specific to the lessor. Lessors rarely disclose this information. To determine the implicit rate, a lessee must know both the lessor’s estimate of the residual value of the underlying asset and the amount of initial direct cost the lessor will defer for the lease. The residual value is most easily determined if there is a provision to convey the asset to the lessee at the end of the lease term through a bargain purchase option or a title transfer provision (but only if the contract includes a termination option).1

Consistent with current guidance, if the lease’s implicit interest rate is not readily determinable, the lessee’s estimated incremental borrowing rate should be used. Determining the incremental borrowing rate entails estimating the interest rate the lessee would be charged for borrowing the lease payment amounts during the lease term.


Statement 87, as originally issued, notes that lessors have information to determine the interest rate they charge the lessee—including implicit rates—and should use this rate to discount the future lease payments. To calculate an implicit interest rate, a lessor needs a market value for the related property, space, or land. For some asset types, e.g., equipment or office space in a downtown building, market data are not too difficult to obtain. For other specialized asset types, the market value will be more challenging, e.g., transit, port, or airport agreements for space inside a government-owned terminal or land and facilities with access to runways. A valuation specialist might be needed to apply a cost, income, or market approach—or some combination of these approaches—to arrive at a lease’s supportable implicit rate.

GASB received feedback from constituents that most government contracts do not include a stated interest rate and updated the discount rate guidance for lessors. GASB Implementation Guide No. 2020-1 notes that in the absence of a stated rate, the lessor should determine whether the rate implicit in the lease can be estimated. Lessors may use professional judgment to determine their best estimate for the interest rate, maximizing the use of observable information, e.g., using the lessee’s estimated incremental borrowing rate or published market rates for similar instruments. If it is not practicable for the lessor to estimate the discount rate through those methods, the lessor’s own incremental borrowing rate may be used.

Rate Implicit in the Lease

The rate implicit in the lease is the internal rate of return on all lease-related payments or receipts. The implicit rate is the discount rate that exactly balances the lease payments and the fair value of the leased assets for the lease term at lease inception.

Present Value of Lease Payments + Present Value of Unguaranteed Residual Value = Fair Value of the Underlying Asset + Lessor's Initial Direct Costs

Appendix A includes an example of the calculation of the rate implicit in the lease. Because of the challenges noted above, most governments likely will have to fall back to determining an incremental borrowing rate.

For a lease with fixed payments in which the lessee and lessor have similar credit ratings, the interest rate implicit in the lease will generally be higher than the lessee’s incremental borrowing rate. Remember, a lower discount rate will lead to a higher lease liability.

Incremental Borrowing Rate

GASB defines the incremental borrowing rate as “an estimate of the interest rate that would be charged for borrowing the lease payment amounts during the lease term."

GASB has repeatedly rejected requests for the ability to use a risk-free rate or municipal bond index rate as a cost-effective alternative when the implicit lease rate is unavailable.

Below is a basic framework to calculate a government’s incremental borrowing rate, which reflects the lessee credit, lease term, the nature and quality of the collateral provided, and the economic environment in which the transaction occurred. These components or inputs will vary from lease to lease, which could result in different incremental borrowing rates for every lease or lease component (see Appendix B).

Unlike FASB, the GASB lease guidance does not offer a practical expedient to apply an appropriate discount rate to a portfolio of similar leases. Under GASB guidance, each lease could have a different discount rate, which needs to be supported with appropriate documentation. Governments will need to establish internal controls over any new procedures, processes, estimates, or judgments used to determine the appropriate discount rate.

Base Rate + Financing Adjustments + Lease-Specific Adjustments = Incremental Borrowing Rate

Base Rate

The first step is to establish an appropriate base rate, which will then be adjusted for credit- and lease-specific items. For some larger governments, the starting point may be based on debt already outstanding. For governments without outstanding debt or debt that is not publicly traded, a risk-free rate may be the only starting point.

Secured Rate

An entity can determine a base rate from its own publicly traded debt. If the government does not have public debt but has consummated a recent debt financing, this can be used as the starting benchmark. Alternatively, if the government has recently been rated by a major rating agency, a base rate can be estimated by comparison to similarly rated governmental entities with outstanding debt.

Risk-Free Rate

If no debt is outstanding, start with a government-specific, risk-free rate that approximates the lease term. In general, the data are publicly available; however, there may be some circumstances when an exact match does not exist for the lease term or inception date. In such cases, judgment may be required to determine a suitable risk-free reference rate.

Financing Adjustments

A government would need to adjust the base rate to reflect credit-specific factors such as the overall level of indebtedness or if the lease results in a change to leverage ratio, which would warrant a higher incremental borrowing rate.

In a few cases, a lessee may conclude the difference between a secured rate and unsecured rate is insignificant, e.g., when a government’s credit quality is such that a lending institution would not charge a materially lower rate if collateral were pledged. If so, no further adjustment is required. A government would need to document support for this conclusion.

Lease-Specific Adjustments

The base rate also should be adjusted for the following lease-specific items:

  • Term – In general, if the term is longer, the rate will be higher (since the risk is higher).
  • Timing of Payments – If more payments are made upfront, the risk—and rate—may be lower. The rate also would need to be adjusted to reflect any prepayment options.
  • Collateral – The type of asset pledged as collateral will have an effect on the incremental borrowing rate. For example, the costs of repossessing a low-value asset, e.g., a printer, would be high relative to the asset’s underlying value and associated lease cash flows, so the benefits of having this security would likely be relatively insignificant. Alternatively, for larger-value assets, e.g., a car or property, the benefit of having security is more valuable as there is increased likelihood of the lessor obtaining value in the event of default.

Updates to the Discount Rate

Lessees must update the discount rate if there is a change in the lease term or the likelihood a purchase option will be exercised if the change—individually or in the aggregate—is expected to significantly affect the lease liability. A lease liability is not required to be remeasured, nor is the discount rate required to be reassessed, solely for a change in the lessee’s incremental borrowing rate.

A lessor must update the discount rate if the lease term changes or there is a change in the interest the lessor charges the lessee if the change—individually or in the aggregate—is expected to significantly affect the amount of the lease receivable.


For some governments, Statement 87’s adoption will be complex and likely will require significant hours to implement correctly. FORVIS can help educate your team, provide implementation tools, and assist with analysis and documentation. If you would like assistance complying with the new guidance, contact one of our professionals.

Appendix A

Example – Implicit Discount Rate Calculation

A government leases a fleet of vehicles for half of their estimated useful lives. The lease term is 30 months. The lease does not specify the discount rate. Total lease payments over the lease term are $1.1 million, and the fair value of the vehicles at the lease’s commencement is $2 million. May the fair value of the vehicles be used in determining the lease’s implicit discount rate?

Yes. Discounting the lease payments at the rate the lessor charges the lessee—explicitly or implicitly—arrives at the fair value of the intangible right to use the vehicles, which is not necessarily equivalent to the fair value of the vehicles. Using the $2 million fair value of the vehicles at the lease’s commencement to determine the lease’s implicit discount rate may be appropriate if the government has determined that—considering the agreement’s facts and circumstances—the vehicle’s fair value approximates the fair value of the lessee’s right to use the vehicles. If those values differ because the lease term is less than the entire useful life of the vehicles, the fair value of the right to use the vehicles for the lease term may be estimated using professional judgment, maximizing the use of observable information. In this example, the government has estimated that the fair value of the right to use the vehicles is $1 million because the length of the lease term is half of the vehicles’ estimated useful lives. The government assumes the fair value of the right to use the vehicles decreases ratably over the lease term because the service capacity of the vehicles remains the same throughout the lease term, even though the fair value of the vehicles decreases faster at the lease term’s beginning. Therefore, the interest associated with the lease is $100,000, and the discount rate is approximately 7.5%.

Appendix B

Example – Different Incremental Borrowing Rates

A contract conveys the right to use a building for 30 years and the attached parking garage for 15 years. Should the discount rate be separately assessed for each component?

Yes. Lease contracts involving multiple underlying assets must be accounted for as separate lease components if the underlying assets have different lease terms. The reporting of two components instead of one may affect the agreement’s implicit discount rate. The lessee’s implicit incremental borrowing rate may differ between the two components because of differences in lease terms.

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  • 1If a contract transfers title at termination and does not have a termination clause, the transaction is not a lease but rather a financed purchase with different accounting guidance.

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