# Depreciation Calculator

Calculate asset depreciation using straight-line, double declining balance, or sum-of-years-digits methods. Find book value and depreciation expense.

## What this calculates

Calculate depreciation for any asset using three common methods. Enter the asset cost, salvage value, useful life, and select a method to see the annual depreciation expense, accumulated depreciation, and remaining book value for any year.

## Inputs

- **Asset Cost** ($) — min 0 — The original purchase price of the asset.
- **Salvage Value** ($) — min 0 — The estimated value of the asset at the end of its useful life.
- **Useful Life (Years)** — min 1, max 50 — The expected useful life of the asset in years.
- **Depreciation Method** — options: Straight-Line, Double Declining Balance, Sum-of-Years-Digits — The depreciation method to use.
- **Current Year of Asset** — min 1, max 50 — Which year of the asset's life to calculate (1 = first year).

## Outputs

- **Annual Depreciation** — formatted as currency — The depreciation expense for the selected year.
- **Accumulated Depreciation** — formatted as currency — Total depreciation accumulated from year 1 through the selected year.
- **Book Value** — formatted as currency — The remaining value of the asset after accumulated depreciation.
- **Depreciation Rate** — formatted as percentage — The depreciation rate for the selected year.

## Details

Depreciation is the systematic allocation of an asset's cost over its useful life. It is a non-cash expense that reduces taxable income and reflects the gradual consumption of an asset's value. The three most common methods are straight-line, double declining balance, and sum-of-years-digits.

Straight-line depreciation is the simplest: (Cost - Salvage Value) / Useful Life. It allocates an equal expense each year. Double declining balance (DDB) is an accelerated method that uses a rate of 2/useful life applied to the remaining book value, resulting in higher depreciation in early years. Sum-of-years-digits (SYD) is another accelerated method where each year's depreciation is (Remaining Life / Sum of All Years) multiplied by the depreciable amount.

Accelerated methods like DDB and SYD front-load depreciation expense, which can be advantageous for tax planning by reducing taxable income in early years. Straight-line is simpler and produces more predictable expenses. The choice of method affects reported profits but not cash flow, since depreciation is a non-cash charge. Most companies use straight-line for financial reporting and an accelerated method (like MACRS) for tax purposes.

## Frequently Asked Questions

**Q: What is straight-line depreciation?**

A: Straight-line depreciation allocates an equal amount of depreciation expense each year. The formula is (Asset Cost - Salvage Value) / Useful Life. For example, a $50,000 asset with $5,000 salvage value and 5-year life has annual depreciation of $9,000. It is the most commonly used method for financial reporting due to its simplicity.

**Q: What is double declining balance depreciation?**

A: Double declining balance (DDB) is an accelerated method that applies twice the straight-line rate to the declining book value each year. The rate is 2/useful life. For a 5-year asset, the rate is 40%. In year 1, a $50,000 asset depreciates $20,000 (40% of $50,000); in year 2, $12,000 (40% of $30,000), and so on. It never depreciates below the salvage value.

**Q: When should I use accelerated depreciation?**

A: Accelerated methods are beneficial when you want to maximize tax deductions in the early years of an asset's life, when the asset genuinely loses more value early (like vehicles and technology), or when you want to match higher depreciation expense with higher revenues generated by a new asset.

**Q: What is salvage value?**

A: Salvage value (also called residual value) is the estimated amount an asset will be worth at the end of its useful life. It represents the expected resale or scrap value. The depreciable amount is the asset cost minus salvage value. Some assets, particularly technology, may have zero salvage value.

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Source: https://vastcalc.com/calculators/finance/depreciation
Category: Finance
Last updated: 2026-04-21