WILSON BANK HOLDING CO

Allowance for Credit Losses ("ACL") - Loans

The allowance for credit losses on loans is a contra-asset valuation account, calculated in accordance with ASC 326 that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The amount of the allowance represents management's best estimate of current expected credit losses on loans considering available information from internal and external sources, relevant to assessing collectability over the loans' contractual terms, adjusted for expected prepayments when appropriate. Relevant available information includes historical credit loss experience, current conditions and reasonable and supportable forecasts. While historical credit loss experience provides the basis for the estimation of expected credit losses, adjustments to historical loss information may be made for differences in current portfolio-specific risk characteristics, environmental conditions or other relevant factors. The allowance for credit losses is measured on a collective basis for portfolios of loans when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Expected credit losses for collateral dependent loans, including loans where the borrower is experiencing financial difficulty but foreclosure is not probable, are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate.

The Company’s discounted cash flow methodology incorporates a probability of default and loss given default model, as well as expectations of future economic conditions, using reasonable and supportable forecasts. Together, the probability of default and loss given default models with the use of reasonable and supportable forecasts generate estimates for cash flows expected and not expected to be collected over the estimated life of a loan. Estimates of future expected cash flows ultimately reflect assumptions made concerning net credit losses over the life of a loan. The use of reasonable and supportable forecasts requires significant judgment. Management leverages economic projections from reputable and independent third parties to inform and provide its reasonable and supportable economic forecasts. The Company’s model reverts to a straight line basis for purposes of estimating cash flows beyond a period deemed reasonable and supportable. The Company forecasts probability of default and loss given default based on economic forecast scenarios over an eight quarter time period before reverting to a straight line basis for a four quarter time period. The duration of the forecast horizon, the period over which forecasts revert to a straight line basis, the economic forecasts that management utilizes, as well as additional internal and external indicators of economic forecasts that management considers, may change over time depending on the nature and composition of our loan portfolio. Changes in economic forecasts, in conjunction with changes in loan specific attributes, impact a loan’s probability of default and loss given default, which can drive changes in the determination of the ACL. Expectations of future cash flows are discounted at the loan’s effective interest rate. The resulting ACL represents the amount by which the loan’s amortized cost exceeds the net present value of a loan’s discounted cash flows expected to be collected. The ACL is recorded through a charge to provision for credit losses and is reduced by charge-offs, net of recoveries on loans previously charged-off. It is the Company’s policy to charge-off loan balances at the time they have been deemed uncollectible.

For segments where the discounted cash flow methodology is not used, a remaining life methodology is utilized. The remaining life method uses an average annual charge-off rate applied to the contractual term, further adjusted for estimated prepayments to determine the unadjusted historical charge-off rate for the remaining balance of assets.

The estimated credit losses for all loan segments are adjusted for changes in qualitative factors not inherently considered in the quantitative analyses. The qualitative categories and the measurements used to quantify the risks within each of these categories are subjectively selected by management. The data for each measurement may be obtained from internal or external sources. The current period measurements are evaluated and assigned a factor commensurate with the current level of risk relative to past measurements over time. The resulting qualitative adjustments are applied to the relevant collectively evaluated loan portfolios. These adjustments are based upon the following:

Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses.

Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments.

Changes in the nature and volume of the portfolio and in the terms of loans.

Changes in the experience, ability, and depth of lending management and other relevant staff.

Changes in the volume and severity of past-due loans, the volume of non-accrual loans, and the volume and severity of adversely classified or graded loans.

Changes in the quality of the Company's loan review system.

Changes in the value of underlying collateral for collateral-dependent loans.

The existence and effect of any concentrations of credit, and changes in the level of such concentrations.

The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the Company’s existing portfolio.

The qualitative allowance allocation, as determined by the processes noted above, is increased or decreased for each loan segment based on the assessment of these various qualitative factors.

Loans that do not share similar risk characteristics with the collectively evaluated pools are evaluated on an individual basis and are excluded from the collectively evaluated pools. Individual evaluations are generally performed for loans greater than $500,000 which have experienced significant credit deterioration. Such loans are evaluated for credit losses based on either discounted cash flows or the fair value of collateral. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral, less selling costs. For loans for which foreclosure is not probable, but for which repayment is expected to be provided substantially through the operation or sale of the collateral, the Company has elected the practical expedient under ASC 326 to estimate expected credit losses based on the fair value of collateral, with selling costs considered in the event sale of the collateral is expected. Loans greater than $100,000 for which terms have been modified either through principal forgiveness, payment delay, term extension, or interest rate reduction are evaluated using these same individual evaluation methods.

In assessing the adequacy of the allowance for credit losses, the Company considers the results of the Company's ongoing independent loan review process. The Company undertakes this process both to ascertain those loans in the portfolio with elevated credit risk and to assist in its overall evaluation of the risk characteristics of the entire loan portfolio. Its loan review process includes the judgment of management, independent internal loan reviewers and reviews that may have been conducted by third-party reviewers including regulatory examiners. The Company incorporates relevant loan review results in the allowance.

In accordance with CECL, losses are estimated over the remaining contractual terms of loans, adjusted for prepayments and curtailment. The contractual term excludes expected extensions, renewals and modifications.

Credit losses are estimated on the amortized cost basis of loans, which includes the principal balance outstanding and deferred loan fees and costs.

While management utilizes its best judgment and information available, the ultimate appropriateness of the allowance is dependent upon a variety of factors beyond management's control, including the performance of the loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications.

Loans are charged off when management believes that the full collectability of the loan is unlikely. As such, a loan may be partially charged-off after a “confirming event” has occurred which serves to validate that full repayment pursuant to the terms of the loan is unlikely.

Transactions in the allowance for credit losses for the years ended December 31, 2023 and 2022 are summarized as follows:

The following tables detail the allowance for loan losses and recorded investment in loans by loan classification and by impairment evaluation method as of December 31, 2021, as determined in accordance with ASC 310 prior to the adoption of ASC 326:

The following tables present the amortized cost basis of collateral dependent loans at December 31, 2023 and December 31, 2022 which are individually evaluated to determine expected credit losses: