Is interest payments variable or fixed cost?

Interest payments are typically considered fixed costs because they do not fluctuate with the level of production or sales. Once a loan agreement is established, the interest rate and payment schedule are usually predetermined, leading to consistent, predictable payments over time. However, if interest rates are variable (as in the case of some adjustable-rate loans), the total interest expense can change, but the cost itself is still categorized as fixed in relation to the business's operational costs.