Lease accounting under IFRS 16 requires businesses to recognize most leases on the balance sheet. One of the most important judgments in this process is selecting the correct Incremental Borrowing Rate. Since many lease agreements do not include an easily observable interest rate, organizations must estimate a borrowing rate that reflects their own financing conditions. Choosing the right rate is essential because it directly affects lease liabilities, right-of-use assets, depreciation, and interest expenses.
This guide explains how businesses can determine an appropriate borrowing rate while complying with IFRS 16 requirements.
What Is an Incremental Borrowing Rate?
The Incremental Borrowing Rate is the interest rate that a company would have to pay if it borrowed funds over a similar period and with similar security to obtain an asset of comparable value in a similar economic environment.
Under IFRS 16, companies use the interest rate implicit in the lease whenever it can be readily determined. However, in many real-world lease contracts, this information is unavailable. In those situations, the borrower must estimate an appropriate alternative rate.
A carefully selected borrowing rate ensures that lease liabilities are measured fairly and consistently.
Why Choosing the Right Rate Matters
The borrowing rate has a significant impact on financial reporting because it determines the present value of future lease payments.
A lower rate results in:
- Higher lease liabilities
- Larger right-of-use assets
- Lower initial finance costs
A higher rate leads to:
- Lower lease liabilities
- Smaller right-of-use assets
- Higher finance expenses over the lease term
Even a small change in the selected rate can materially affect financial statements, making careful assessment essential.
Key Factors to Consider
1. Lease Term
The duration of the lease is one of the first factors to evaluate. A five-year lease generally carries a different borrowing cost than a ten-year or fifteen-year financing arrangement.
Businesses should identify financing arrangements with comparable maturity periods whenever possible.
2. Security of the Loan
IFRS 16 assumes borrowing with similar security as the leased asset. Secured borrowing generally carries lower interest rates than unsecured financing because the lender has collateral that reduces lending risk.
Understanding the security characteristics helps produce a more realistic estimate.
3. Economic Environment
Interest rates vary significantly across countries and financial markets. Inflation, central bank policies, currency risks, and local lending conditions all influence borrowing costs.
Companies operating internationally should avoid applying a single rate across multiple jurisdictions unless economic conditions are genuinely comparable.
4. Currency of the Lease
The borrowing rate should reflect the currency in which lease payments are made.
For example:
- An Indian Rupee lease should generally use borrowing assumptions based on INR financing.
- A US Dollar lease should consider USD borrowing markets.
Currency differences can materially affect discount rates due to differing interest rate environments.
5. Credit Risk of the Company
Every organization has a unique credit profile.
Factors affecting borrowing costs include:
- Financial performance
- Debt levels
- Credit history
- Industry risk
- Company size
- Liquidity position
Businesses with stronger financial standing usually obtain financing at lower interest rates than companies with higher credit risk.
Common Methods Used to Estimate the Rate
Using Existing Borrowings
If the company already has loans with similar maturity, security, and currency, those borrowing costs may provide a useful starting point.
Necessary adjustments should be made to reflect differences between the loan and the lease.
Using Market Data
Many organizations use publicly available market information such as:
- Corporate bond yields
- Government bond yields
- Commercial lending rates
- Bank financing quotes
Market data should always be adjusted to reflect the company's individual borrowing characteristics.
Building Up the Rate
Some companies estimate the borrowing cost by combining several components:
- Risk-free rate
- Credit spread
- Currency adjustment
- Term adjustment
- Security adjustment
This structured approach is commonly used when direct borrowing information is unavailable.
Challenges Businesses Often Face
Selecting an appropriate rate is not always straightforward.
Some common challenges include:
Limited Borrowing History
New businesses or startups may have no comparable borrowing records.
Changing Interest Rates
Market conditions can change rapidly due to inflation, monetary policy, or economic uncertainty. Historical borrowing rates may no longer represent current financing conditions.
Complex Group Structures
Large corporate groups often borrow centrally while subsidiaries sign individual lease agreements. Each reporting entity should evaluate whether adjustments are required based on its own circumstances.
Different Types of Assets
Property leases, vehicle leases, and equipment leases may involve different financing risks. Applying one uniform rate across all lease categories may not always be appropriate.
Best Practices for Selecting an Appropriate Rate
Document Every Assumption
Maintain clear documentation explaining:
- Data sources
- Market observations
- Adjustments made
- Professional judgments
- Supporting calculations
Proper documentation simplifies audits and improves consistency.
Use Reliable Financial Data
Information should come from credible financial institutions, market databases, or recognized economic sources rather than informal estimates.
Apply Consistency
Companies should establish internal policies for determining discount rates so similar leases receive consistent treatment.
Consistency improves comparability across reporting periods.
Review Rates Regularly
Although lease discount rates are generally determined at lease commencement, organizations should periodically review their estimation methodology to ensure future leases continue using current market assumptions.
Role of Professional Valuation Experts
Many organizations seek assistance from valuation specialists or accounting advisors when estimating the Incremental Borrowing Rate for complex leasing arrangements.
Professional experts can:
- Analyze market conditions
- Assess company-specific credit risk
- Develop defensible estimation models
- Support audit documentation
- Improve compliance with IFRS 16
Their expertise is particularly valuable for multinational companies and businesses with significant lease portfolios.
Common Mistakes to Avoid
Several errors frequently occur during lease measurement:
- Using the same rate for every lease without analysis.
- Ignoring differences in lease terms.
- Overlooking currency-specific borrowing conditions.
- Failing to adjust for secured versus unsecured financing.
- Using outdated market information.
- Maintaining insufficient documentation for audit purposes.
Avoiding these mistakes helps produce more reliable financial reporting.
Conclusion
Choosing the right Incremental Borrowing Rate under IFRS 16 requires careful judgment, reliable market information, and a clear understanding of the company's borrowing profile. Factors such as lease term, security, credit risk, currency, and economic environment all influence the appropriate discount rate. By applying a consistent methodology, documenting assumptions, and reviewing available market data, businesses can improve the accuracy of lease measurements and strengthen compliance with IFRS 16. A well-supported approach not only enhances financial reporting quality but also builds confidence among auditors, investors, and other stakeholders.