SLM: Office computer ₹80,000 cost, ₹5,000 salvage, 5-year life
Annual depreciation: (80,000 − 5,000) / 5 = ₹15,000. Same amount each year. Year 1 book value: ₹65,000. Year 5 book value: ₹5,000 = salvage. Total depreciation over life: ₹75,000.
Calculate asset depreciation using Straight Line Method (SLM), Written Down Value (WDV) or Units of Production. Generate a year-wise schedule with opening value, depreciation and closing book value.
Depreciable amount
₹4,50,000
Total depreciation
₹4,50,000
Closing value
₹50,000
| Year | Opening | Depreciation | Closing |
|---|---|---|---|
| Year 1 | ₹5,00,000 | ₹90,000 | ₹4,10,000 |
| Year 2 | ₹4,10,000 | ₹90,000 | ₹3,20,000 |
| Year 3 | ₹3,20,000 | ₹90,000 | ₹2,30,000 |
| Year 4 | ₹2,30,000 | ₹90,000 | ₹1,40,000 |
| Year 5 | ₹1,40,000 | ₹90,000 | ₹50,000 |
This is an accounting estimator. Companies Act depreciation, Income Tax depreciation and internal MIS depreciation can use different rates and lives.
Часть содержимого пока показывается на английском.
Depreciation is the systematic allocation of an asset's cost over its useful life - recognising that machinery, vehicles, computers, buildings and other physical assets lose value as they're used. Every business, from a small kirana store with a refrigerator to a manufacturing unit with crores of machinery, must account for depreciation in financial statements and tax returns. This calculator handles the three methods recognised in Indian accounting: Straight Line Method (SLM), Written Down Value (WDV), and Units of Production - each with its own use cases and tax implications.
Why depreciation matters: it affects profit (depreciation reduces taxable income), cash flow (it's a non-cash expense), valuation (assets carry their depreciated book value on the balance sheet), and tax (Income Tax Act has its own depreciation rates that differ from Companies Act). For Indian businesses, the Companies Act 2013 mandates depreciation on useful life basis (typically 5-60 years for various asset classes) using SLM or WDV. The Income Tax Act prescribes WDV at fixed rates (15% for machinery, 40% for computers, 10% for buildings, etc.). Most companies compute both - book depreciation as per Companies Act for financial statements, and tax depreciation as per Income Tax Act for ITR. Differences create deferred tax assets/liabilities.
Enter asset cost, salvage value and useful life.
Choose SLM, WDV or Units of Production method.
For WDV, enter the depreciation rate. For units method, enter produced units and total expected units.
Review annual depreciation, accumulated depreciation and closing value.
SLM spreads depreciable cost evenly across useful life. WDV applies a fixed rate to the opening book value every year, so depreciation is higher early. Units of Production allocates depreciation based on actual usage.
SLM = (Cost - Salvage) / Useful Life; WDV = Opening Value × Rate
Straight Line Method (SLM): annual depreciation = (Cost − Salvage Value) / Useful Life. Same amount each year. Use SLM for assets that depreciate evenly over time - buildings, furniture, leasehold improvements. Most companies use SLM for book purposes because it's simple and predictable. Companies Act Schedule II prescribes useful lives - building 30-60 years, plant and machinery 8-25 years, computers 3-6 years, vehicles 8-10 years.
Written Down Value (WDV / Diminishing Balance): annual depreciation = Opening Book Value × Rate. Same percentage rate each year, but applied to declining book value. Depreciation is highest in year 1 and falls each year. Use WDV for assets that lose value faster early in their life - cars, computers, machinery with rapid technology obsolescence. Income Tax Act mandates WDV for tax purposes for almost all assets. Standard IT rates: buildings 10%, plant/machinery 15%, computers/software 40%, motor vehicles 15% (40% for commercial), books 100%.
Units of Production: annual depreciation = (Cost − Salvage) × (Units Produced This Year / Total Lifetime Units). Allocates depreciation based on actual usage rather than passage of time. Use for production machinery where wear is proportional to output - drilling rigs, pressing machines, vehicle taxis with kilometre meters. Less common in Indian practice but theoretically more accurate for some industries.
Annual depreciation: (80,000 − 5,000) / 5 = ₹15,000. Same amount each year. Year 1 book value: ₹65,000. Year 5 book value: ₹5,000 = salvage. Total depreciation over life: ₹75,000.
Year 1: 15% × 10,00,000 = ₹1,50,000 depreciation. Closing book: ₹8,50,000. Year 2: 15% × 8,50,000 = ₹1,27,500. Closing: ₹7,22,500. Year 3: 15% × 7,22,500 = ₹1,08,375. Notice falling depreciation each year - typical WDV pattern.
Year 1 produces 80,000 units. Depreciation: (50,00,000 − 5,00,000) × (80,000/5,00,000) = 45,00,000 × 0.16 = ₹7,20,000. Highest depreciation in busy years, lowest in slow years.
Use the method required by your accounting policy or tax rules. Companies Act, Income Tax Act and internal MIS can all differ.
Written Down Value depreciation applies a percentage rate to the opening book value each year.
Yes. Many small tools and low-value assets are assumed to have no residual value.
No. Car insurance IDV uses IRDAI slabs. This calculator is for business asset accounting.
Every business - kirana store, SaaS startup, manufacturing unit - runs on four cycles: cash, inventory, depreciation and financing. Get any one wrong and the business runs out of money before it runs out of opportunity. This calculator addresses one piece of that puzzle the way a CA, CFO or operations manager would actually compute it.
Use it alongside the break-even, business loan, depreciation and inventory calculators to model your unit economics. For Indian businesses the depreciation calculator follows the Companies Act 2013 schedule (SLM and WDV); for financing it follows the same monthly reducing balance that PSU and private banks use.
The Depreciation Calculator is part of the Business suite on Online Calculator Tools, alongside 6 related calculators. All tools share the same UI patterns, the same privacy-first rendering (nothing is sent to a server), and the same commitment to showing the formula and assumptions behind every result.