Calculate depreciation using straight-line, double declining balance, or MACRS methods. Generate schedules, compare methods, and visualize asset value over time.
| Year | Depreciation Expense | Accumulated Depreciation | Book Value |
|---|
Depreciation is the accounting process of allocating the cost of a tangible asset over its useful life. When a business buys equipment, vehicles, or property, the full cost is not expensed immediately. Instead, the cost is spread across multiple accounting periods to match the expense with the revenue the asset generates.
On the income statement, depreciation appears as an operating expense that reduces taxable income. On the balance sheet, accumulated depreciation is a contra-asset account that reduces the gross value of fixed assets to their net book value.
For a $100,000 asset with a $10,000 salvage value and a 5-year useful life: ($100,000 − $10,000) ÷ 5 = $18,000 per year.
This accelerated method applies a constant rate to a declining book value, producing higher depreciation in early years and lower amounts later. The rate is double the straight-line rate.
The Modified Accelerated Cost Recovery System (MACRS) is the tax depreciation system required by the IRS for most business property placed in service after 1986. MACRS assigns assets to property classes and applies predetermined percentages each year. Unlike other methods, MACRS ignores salvage value — the asset is depreciated down to zero.
Choosing the right depreciation method depends on how you expect the asset to lose value and whether you need the calculation for tax or financial reporting purposes.
| Feature | Straight-Line | Double Declining Balance | MACRS |
|---|---|---|---|
| Pattern | Equal expense each year | Higher early, lower later | Accelerated (IRS tables) |
| Complexity | Simple | Moderate | Moderate (table lookup) |
| Salvage Value | Subtracted from cost | Sets floor for book value | Ignored (depreciate to $0) |
| Best For | GAAP financial reporting | Assets losing value quickly | U.S. federal tax returns |
| Used By | Most companies (books) | Tech, equipment-heavy firms | All U.S. taxpayers (tax) |
| Tax Advantage | Minimal (even deductions) | Front-loaded deductions | Maximum front-loading |
Under MACRS, the IRS classifies business property into recovery periods. Below are the most common classes with their depreciation percentages (GDS, 200% declining balance convention).
| Property Class | Example Assets | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | Year 6+ |
|---|---|---|---|---|---|---|---|
| 3-Year | Tractors, racehorses, rent-to-own property | 33.33% | 44.45% | 14.81% | 7.41% | — | — |
| 5-Year | Vehicles, computers, office equipment | 20.00% | 32.00% | 19.20% | 11.52% | 11.52% | 5.76% |
| 7-Year | Office furniture, fixtures, agricultural machinery | 14.29% | 24.49% | 17.49% | 12.49% | 8.93% | 8.92 / 8.93 / 4.46% |
| 10-Year | Water transportation, single-purpose structures | 10.00% | 18.00% | 14.40% | 11.52% | 9.22% | Continues to Yr 11 |
| 15-Year | Land improvements, fences, roads, bridges | 5.00% | 9.50% | 8.55% | 7.70% | 6.93% | Continues to Yr 16 |
| 20-Year | Farm buildings, municipal sewers | 3.750% | 7.219% | 6.677% | 6.177% | 5.713% | Continues to Yr 21 |
Depreciation is a non-cash expense. It reduces reported income but does not directly reduce cash. This is why depreciation is added back in the cash flow statement under operating activities.
Most U.S. companies use straight-line for financial reporting (GAAP) and MACRS for tax returns. The difference creates a deferred tax liability on the balance sheet.
By accelerating depreciation, MACRS provides larger tax deductions in earlier years. Due to the time value of money, a dollar saved today is worth more than a dollar saved five years from now.
Land is considered to have an indefinite useful life and does not wear out. Only improvements to land (buildings, fences, paving) can be depreciated. This is a common exam question in accounting courses.
Section 179 allows businesses to deduct the full cost of qualifying assets in the year of purchase (up to $1.22M in 2024), instead of depreciating over multiple years. It is a powerful tool for small businesses.
Depreciation is the systematic allocation of an asset's cost over its useful life. It reflects the decline in value of tangible assets like equipment, vehicles, and buildings due to wear, age, or obsolescence. Depreciation is recorded as an expense on the income statement and reduces the book value of assets on the balance sheet.
The straight-line depreciation formula is: Annual Depreciation = (Asset Cost − Salvage Value) ÷ Useful Life in Years. This method spreads the depreciable amount evenly across each year of the asset's useful life, making it the simplest and most commonly used depreciation method.
MACRS (Modified Accelerated Cost Recovery System) is the tax depreciation method required by the IRS for most business assets. It assigns assets to property classes (3, 5, 7, 10, 15, or 20 years) and uses predetermined percentages to calculate depreciation each year. MACRS front-loads depreciation, providing larger deductions in earlier years. Unlike other methods, salvage value is ignored under MACRS.
Straight-line depreciation allocates an equal amount each year, while double declining balance applies a fixed rate (2 ÷ useful life) to the remaining book value each year. DDB results in higher depreciation expense in early years and lower amounts later. Straight-line is simpler and commonly used for financial reporting; DDB better matches assets that lose value quickly early in their life.
Accumulated depreciation is the total depreciation expense recorded against an asset from the time it was placed in service. It is a contra-asset account on the balance sheet that reduces the asset's gross cost to arrive at net book value. For example, if equipment cost $100,000 and has $40,000 in accumulated depreciation, its book value is $60,000.