In business accounting, physical assets like machinery, vehicles, and computer equipment lose value over time due to wear and tear or obsolescence. Depreciation is the systematic method of allocating the cost of these tangible assets over their useful life. Accurately calculating depreciation is not only a core principle of GAAP (Generally Accepted Accounting Principles) but is also crucial for maximizing corporate tax deductions and maintaining an accurate balance sheet.
Straight-Line Depreciation Formula
Annual Depreciation Expense = (Asset Original Cost - Estimated Salvage Value) / Useful Life in Years
This method spreads the expense evenly across every year of the asset's life.
How to Use This Calculator
- Enter the original Purchase Cost of the asset (including shipping, installation, and taxes).
- Input the Salvage Value (the estimated resale or scrap value of the asset at the end of its use).
- Enter the Asset's Useful Life (in years) according to IRS guidelines or industry standards.
- Click Calculate to instantly generate a year-by-year depreciation schedule and book value breakdown.
Frequently Asked Questions (FAQ)
What is the difference between straight-line and declining balance?
Straight-line depreciation expenses the exact same amount every year. The declining balance method (or accelerated depreciation) front-loads the expense, meaning the asset loses more of its book value in the early years. This is often used for technology or vehicles that lose value rapidly right after purchase.
What is Salvage Value?
Salvage value, also known as residual value, is the estimated amount that a company expects to receive when it sells or disposes of an asset at the end of its useful life. You cannot depreciate an asset below its salvage value.