IT Act — Block-wise WDV Method (Section 32) · Companies Act — Schedule II SLM / WDV · Dual Comparison · FY 2026-27
| Block / Asset Class | WDV Opening (₹) | Additions (₹) During year |
Add: Half-year additions (₹) Added after 180 days |
Less: Disposals (₹) Sale / Transfer |
Rate (%) | Depreciation (₹) | WDV Closing (₹) |
|---|
| Asset Description | Method | Gross Block (₹) | Acc. Deprn Opening (₹) | Additions (₹) | Deletions (₹) | Useful Life (yrs) | Rate (%) | Depreciation (₹) | WDV / Net Block (₹) |
|---|
Calculate depreciation in both tabs first, then view comparison here.
The Depreciation Calculator computes depreciation under two methods: (1) Written Down Value (WDV) as per Income Tax Act block-of-assets rules under Section 32, and (2) Straight Line Method (SLM) as per Companies Act 2013 Schedule II. It is used for computing business income, preparing tax audit reports, reconciling book versus tax depreciation, and computing terminal depreciation or short-term capital gain on block cessation.
What is the depreciation rate for computers under IT Act?
Computers and computer software are depreciated at 40% per annum on WDV. If purchased after 3 October, only 20% (half rate) is allowed in the first year of purchase.
What is a block of assets?
Under the IT Act, assets of the same class with the same depreciation rate are grouped into a "block." Depreciation is calculated on the net WDV of the whole block, not individual assets. Terminal depreciation arises when the entire block ceases to exist.
What is the difference between book depreciation and tax depreciation?
Book depreciation (Companies Act SLM based on useful life) often differs from tax depreciation (IT Act WDV at prescribed rates). The difference is a timing difference that creates deferred tax (as per AS 22/Ind AS 12).