# WDV Explained: Written Down Value Depreciation Guide

Published: 2026-04-19
Author: Warren Team
URL: https://www.heywarren.com/blog/written-down-value

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Your accountant just handed you a depreciation schedule that makes no sense. The truck you bought for ten lakh rupees lost twenty-five percent of its value in year one — but only eighteen-and-three-quarters percent in year two. Same asset, same rate, different rupee figures. Welcome to WDV, or Written Down Value, the accelerated depreciation method that powers Indian tax filings, MACRS schedules in the United States, and a large slice of corporate book-keeping worldwide.

The problem is that most introductory texts treat WDV as a footnote to straight-line depreciation, glossing over the recursive math, the jurisdictional rules, and the strategic tax planning the method enables. That leaves business owners, CFOs, and finance students reverse-engineering their own schedules — usually wrong.

This guide fixes that. We will define written down value precisely, walk through a year-by-year worked example on a hundred-thousand-dollar asset, contrast WDV with straight-line depreciation visually, and map exactly where the method is mandatory (Indian Income Tax Act Section 32, parts of the EU) versus optional ([GAAP](https://www.fasb.org/), [IFRS](https://www.ifrs.org/)). You will leave with a working mental model and a decision rule for choosing between methods.

I write this as someone who has signed off on depreciation schedules across Indian and US books for over a decade. The math is simple once you see it. The judgement around when to apply it is what separates competent accounting from clever tax planning.

## What Is Written Down Value (WDV)?

Written Down Value is an accelerated depreciation method that charges a fixed percentage against an asset's current book value each year. Also called the Reducing Balance Method (RBM) or declining balance method, WDV produces heavy depreciation early in an asset's life and progressively smaller charges later — and in pure form, the book value never reaches zero.

The mechanic is recursive. Year one depreciation equals the original cost multiplied by the WDV rate. Year two depreciation equals the closing book value from year one multiplied by the same rate. Each year compounds downward against a shrinking base, which is why the method is sometimes called "compound" depreciation in older British texts.

This stands in deliberate contrast to straight-line depreciation, which spreads cost minus salvage value evenly across useful life. Straight-line says a delivery van loses the same dollar amount every year. WDV says it loses a larger dollar amount in years one and two — when the van is genuinely worth substantially less the moment it leaves the lot — and progressively less as the residual scrap value approaches.

### Why "Written Down" Value?

The phrase comes from accounting tradition: each year, you "write down" the asset's carrying amount on the balance sheet by the depreciation charge. The closing balance is the written down value, which becomes the opening balance — and depreciation base — for the following year.

## WDV vs Straight-Line Depreciation: The Visual Difference

Straight-line depreciation produces a linear book-value decline. WDV produces a convex curve — steep early, flattening over time. This shape difference is not cosmetic. It determines which method better matches the economic reality of how an asset actually loses value, and it changes the timing of the tax shield by years.

![WDV vs straight-line book value over 10 years](data:image/svg+xml;base64,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)

Notice the WDV curve loses roughly forty-four thousand dollars of book value in the first three years — almost half the asset. The straight-line method takes nearly five years to reach the same point. For depreciable assets like cars, laptops, and IT infrastructure, WDV's convex shape mirrors actual market resale values far more accurately.

## The WDV Formula and a Worked Example

The Written Down Value formula is recursive: depreciation in year N equals the closing WDV from year N-1 multiplied by the depreciation rate. The opening WDV in year one is the asset's original cost. Each subsequent year's opening WDV is the prior year's closing WDV — this carry-forward step is where most manual calculations go wrong.

![Each year's depreciation base is the prior year's closing WDV, not the original cost — the recursive carry-forward that defines the method.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20149%22%20width%3D%22800%22%20height%3D%22149%22%20role%3D%22img%22%3E%3Ctitle%3ETimeline%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Cline%20x1%3D%22120%22%20y1%3D%2255%22%20x2%3D%22680%22%20y2%3D%2255%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%223%22%2F%3E%3Ccircle%20cx%3D%22120%22%20cy%3D%2255%22%20r%3D%2224%22%20fill%3D%22white%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22120%22%20y%3D%2260%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2215%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3E1%3C%2Ftext%3E%3Ctext%20x%3D%22120%22%20y%3D%22101%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EYear%201%3C%2Ftext%3E%3Ctext%20x%3D%22120%22%20y%3D%22119%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3ECost%20%C3%97%2025%25%20%3D%20%2425%2C000%3C%2Ftext%3E%3Ccircle%20cx%3D%22260%22%20cy%3D%2255%22%20r%3D%2224%22%20fill%3D%22white%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22260%22%20y%3D%2260%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2215%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3E2%3C%2Ftext%3E%3Ctext%20x%3D%22260%22%20y%3D%22101%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EYear%202%3C%2Ftext%3E%3Ctext%20x%3D%22260%22%20y%3D%22119%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%2475%2C000%20%C3%97%2025%25%20%3D%20%2418%2C750%3C%2Ftext%3E%3Ccircle%20cx%3D%22400%22%20cy%3D%2255%22%20r%3D%2224%22%20fill%3D%22%232563eb%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%223%22%2F%3E%3Ctext%20x%3D%22400%22%20y%3D%2260%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2215%22%20font-weight%3D%22700%22%20fill%3D%22white%22%3E3%3C%2Ftext%3E%3Ctext%20x%3D%22400%22%20y%3D%22101%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EYear%203%3C%2Ftext%3E%3Ctext%20x%3D%22400%22%20y%3D%22119%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%2456%2C250%20%C3%97%2025%25%20%3D%20%2414%2C063%3C%2Ftext%3E%3Ccircle%20cx%3D%22540%22%20cy%3D%2255%22%20r%3D%2224%22%20fill%3D%22white%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22540%22%20y%3D%2260%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2215%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3E4%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22101%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EYear%205%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22119%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%2431%2C641%20%C3%97%2025%25%20%3D%20%247%2C910%3C%2Ftext%3E%3Ccircle%20cx%3D%22680%22%20cy%3D%2255%22%20r%3D%2224%22%20fill%3D%22white%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22680%22%20y%3D%2260%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2215%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3E5%3C%2Ftext%3E%3Ctext%20x%3D%22680%22%20y%3D%22101%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EYear%2010%3C%2Ftext%3E%3Ctext%20x%3D%22680%22%20y%3D%22119%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%247%2C508%20%C3%97%2025%25%20%3D%20%241%2C877%3C%2Ftext%3E%3C%2Fsvg%3E)

*Each year's depreciation base is the prior year's closing WDV, not the original cost — the recursive carry-forward that defines the method.*

Formally:

- Year 1 Depreciation = Cost × Rate
- Year N Depreciation = Closing WDV (year N-1) × Rate
- Closing WDV (year N) = Opening WDV (year N) − Depreciation (year N)

Let me run a hundred-thousand-dollar asset at a twenty-five percent WDV rate over ten years. This is a realistic profile for commercial vehicles in many Indian tax blocks.

![Year-by-year WDV calculation: $100K asset at 25%](data:image/svg+xml;base64,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)

Two observations matter. First, the year-one charge of twenty-five thousand dollars is more than thirteen times the year-ten charge of eighteen-hundred-seventy-seven dollars — that is the front-loading WDV is famous for. Second, after ten full years, five-thousand-six-hundred-thirty-one dollars of book value remains. Pure WDV asymptotically approaches zero but never gets there.

Compare that to straight-line on the same asset assuming a ten-thousand-dollar salvage value over ten years: ninety thousand of depreciable base divided by ten years equals exactly nine thousand dollars per year, every year, until residual.

## Where WDV Is Mandatory vs Optional

Jurisdiction drives method choice more than accountant preference. WDV is the mandatory tax depreciation method in India under Section 32 of the Income Tax Act, in several EU member states, and is functionally embedded in the US MACRS system through its double-declining balance default for most asset classes.

![WDV adoption by jurisdiction](data:image/svg+xml;base64,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)

### Indian Income Tax Act, Section 32

India's tax code uses a block-of-assets concept. Rather than tracking each asset individually, taxpayers pool similar assets (say, all plant and machinery at fifteen percent, or all computers at forty percent) into blocks. WDV applies to the entire block. Additions are added to the opening WDV of the block; sales are deducted. Depreciation is then computed on the net opening WDV of the block at the prescribed rate set by the Central Board of Direct Taxes.

This pooling has elegant consequences. There is no individual gain or loss on disposal — proceeds simply reduce the block. Unabsorbed depreciation carries forward indefinitely against future profits, unlike business losses which expire after eight years.

### US MACRS and Double-Declining Balance

The Modified Accelerated Cost Recovery System used for US tax depreciation is essentially WDV with a built-in switch. Three-, five-, seven-, and ten-year property use the two-hundred-percent declining balance (double-declining) method. Fifteen- and twenty-year property uses one-hundred-fifty-percent declining balance. All MACRS schedules switch to straight-line in the year SL produces a larger deduction — guaranteeing the asset depreciates fully by end of life.

### GAAP and IFRS

US GAAP permits any systematic and rational method for book purposes, so companies often choose straight-line for simpler financial reporting while filing MACRS for tax — creating deferred tax liabilities. IFRS under IAS 16 requires the method to reflect the pattern of economic benefits consumed; declining balance is permitted and common for assets with front-loaded productivity.

## Variants: DDB, 150%, and the Switch to Straight-Line

The Double-Declining Balance method (DDB) applies twice the straight-line rate to the opening book value each year. For a five-year asset, SL rate is twenty percent, so DDB rate is forty percent. The 150% declining balance variant uses 1.5× the SL rate, producing a less aggressive front-load suitable for longer-lived assets.

![The three main declining-balance variants differ only in the multiplier applied to the straight-line rate, with all switching to straight-line when SL produces a larger charge.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20760%20211%22%20width%3D%22760%22%20height%3D%22211%22%20role%3D%22img%22%3E%3Ctitle%3EHierarchy%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%22300%22%20y%3D%2220%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22380%22%20y%3D%2254%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22white%22%3EDeclining%20Balance%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20110%20105.5%20L%20110%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22110%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3E150%25%20DB%3C%2Ftext%3E%3Ctext%20x%3D%22110%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E1.5%C3%97%20SL%20rate%2C%20MACRS%2015%2F20%E2%80%A6%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20290%20105.5%20L%20290%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22210%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22290%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3E200%25%20DDB%3C%2Ftext%3E%3Ctext%20x%3D%22290%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E2%C3%97%20SL%20rate%2C%20MACRS%203%E2%80%9310-yr%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20470%20105.5%20L%20470%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22390%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22470%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ECustom%20%25%20%28India%29%3C%2Ftext%3E%3Ctext%20x%3D%22470%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E15%E2%80%9340%25%20by%20block%2C%20CBDT%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20650%20105.5%20L%20650%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22570%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22650%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ESwitch%20to%20SL%3C%2Ftext%3E%3Ctext%20x%3D%22650%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EWhen%20SL%20%26gt%3B%20DB%20charge%3C%2Ftext%3E%3C%2Fsvg%3E)

*The three main declining-balance variants differ only in the multiplier applied to the straight-line rate, with all switching to straight-line when SL produces a larger charge.*

The switch-to-straight-line rule is critical and frequently missed. Because pure declining balance never reaches zero, MACRS and similar systems compute both the DB charge and a hypothetical SL charge on remaining book value over remaining life each year. Whichever is higher applies. This guarantees full recovery while preserving the front-loaded benefit.

For a five-year DDB asset, the switch typically happens in year four. Forgetting to switch leaves a stub of undepreciated cost; switching too early sacrifices the tax shield's time value.

## Pros and Cons of WDV

WDV's primary advantage is that it front-loads the tax shield. A dollar of depreciation today is worth more than a dollar five years from now in present-value terms — accelerated depreciation is a free interest-free loan from the tax authority. The method also better matches economic reality for assets that genuinely lose value faster early in life.

### Advantages

- **Front-loaded tax shield**: Larger early deductions improve cash flow and [net present value](/blog/calculation-of-net-present-value-formula) of the depreciation benefit.
- **Matches economic depreciation**: Vehicles, electronics, and IT equipment lose market value in a convex curve, not a straight line.
- **Obsolescence cushion**: Heavier early write-downs reduce book value before technology shifts make the asset uneconomic.
- **Simplifies block accounting**: In Indian tax practice, pooled blocks and indefinite carry-forward of unabsorbed depreciation flow naturally from the WDV mechanic.

### Disadvantages

- **Computational complexity**: Recursive math is error-prone in spreadsheets without proper formulas.
- **Never reaches zero**: Pure WDV leaves a perpetual residual, requiring eventual SL switch or write-off.
- **Wrong fit for some assets**: Buildings, land improvements, and infrastructure depreciate more linearly — straight-line is more appropriate.
- **Lower reported earnings early**: Companies optimising for near-term EPS may prefer straight-line for book purposes.

## When to Choose WDV vs Straight-Line

Use WDV when the asset loses value faster early in its useful life, when tax law mandates it, or when you want to maximise the present value of depreciation deductions. Use straight-line when the asset provides roughly even economic benefit across its life, when financial reporting simplicity matters, or when GAAP or IFRS guidance points to even consumption.

![Asset type and depreciation pattern determine the better method — WDV fits fast-depreciating assets; straight-line fits assets with even consumption.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20720%20480%22%20width%3D%22720%22%20height%3D%22480%22%20role%3D%22img%22%3E%3Ctitle%3EQuadrant%20matrix%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%2290%22%20y%3D%2225%22%20width%3D%22300%22%20height%3D%22190%22%20fill%3D%22%23dbeafe%22%2F%3E%3Crect%20x%3D%22390%22%20y%3D%2225%22%20width%3D%22300%22%20height%3D%22190%22%20fill%3D%22%23d1fae5%22%2F%3E%3Crect%20x%3D%2290%22%20y%3D%22215%22%20width%3D%22300%22%20height%3D%22190%22%20fill%3D%22%23ffedd5%22%2F%3E%3Crect%20x%3D%22390%22%20y%3D%22215%22%20width%3D%22300%22%20height%3D%22190%22%20fill%3D%22%23ede9fe%22%2F%3E%3Cline%20x1%3D%2290%22%20y1%3D%22215%22%20x2%3D%22690%22%20y2%3D%22215%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cline%20x1%3D%22390%22%20y1%3D%2225%22%20x2%3D%22390%22%20y2%3D%22405%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22240%22%20y%3D%22100%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3ESL%20preferred%3C%2Ftext%3E%3Ctext%20x%3D%22240%22%20y%3D%22120%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20Buildings%3C%2Ftext%3E%3Ctext%20x%3D%22240%22%20y%3D%22136%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20Furniture%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22100%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3EWDV%20ideal%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22120%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20Vehicles%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22136%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20IT%2FServers%3C%2Ftext%3E%3Ctext%20x%3D%22240%22%20y%3D%22290%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3ESL%20default%3C%2Ftext%3E%3Ctext%20x%3D%22240%22%20y%3D%22310%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20GAAP%20book%3C%2Ftext%3E%3Ctext%20x%3D%22240%22%20y%3D%22326%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20IFRS%20even-use%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22290%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22700%22%20fill%3D%22%230f172a%22%3EWDV%20%2F%20MACRS%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22310%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20India%20Sec%2032%3C%2Ftext%3E%3Ctext%20x%3D%22540%22%20y%3D%22326%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E%E2%80%A2%20US%20tax%20filing%3C%2Ftext%3E%3Ctext%20x%3D%2290%22%20y%3D%22425%22%20text-anchor%3D%22start%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EEven%20consumption%3C%2Ftext%3E%3Ctext%20x%3D%22690%22%20y%3D%22425%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EFront-loaded%20loss%3C%2Ftext%3E%3Ctext%20x%3D%22390%22%20y%3D%22453%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDepreciation%20Pattern%3C%2Ftext%3E%3Ctext%20x%3D%2280%22%20y%3D%2237%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3ETax%20optimisation%3C%2Ftext%3E%3Ctext%20x%3D%2280%22%20y%3D%22405%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3ESimple%20reporting%3C%2Ftext%3E%3Ctext%20x%3D%2235%22%20y%3D%22215%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2212%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%20transform%3D%22rotate%28-90%2035%20215%29%22%3EPriority%3C%2Ftext%3E%3C%2Fsvg%3E)

*Asset type and depreciation pattern determine the better method — WDV fits fast-depreciating assets; straight-line fits assets with even consumption.*

A practical decision rule: if the second-hand market for the asset shows steep year-one and year-two value drops (cars, smartphones, servers), WDV mirrors reality. If resale values track linearly with age (commercial buildings, furniture), straight-line is cleaner.

## Common Mistakes to Avoid

The most frequent WDV error is using the original cost as the depreciation base in years two and beyond instead of the opening WDV — which collapses the method into straight-line at a wrong rate. The second is mixing rates across years when CBDT or [IRS](https://www.irs.gov/) schedules change. The third is failing to switch from declining balance to straight-line when SL produces the larger annual charge, leaving permanent stub balances.

A fourth, subtler trap: in Indian block accounting, forgetting that asset additions in the second half of the year qualify for only fifty percent depreciation in year one. And finally, conflating book and tax depreciation — the two often diverge, and the difference creates [deferred tax assets](/blog/deferred-tax-assets) or liabilities you must track on the balance sheet.

## Conclusion

Written Down Value is not just an alternative to straight-line — for large parts of the world it is the law, and for most of the rest it is the more economically honest method for assets that lose value quickly. Five takeaways to carry forward:

1. **WDV applies a fixed rate to a shrinking base**, producing a convex book-value curve that front-loads depreciation and the tax shield.
2. **The recursive math matters**: each year's depreciation is the prior year's closing WDV times the rate — not original cost times the rate.
3. **Jurisdiction drives mandate**: India's Section 32 requires WDV with block-of-assets pooling, US MACRS embeds it with switch-to-SL, GAAP and IFRS leave it as a choice.
4. **DDB and 150% DB are WDV variants** scaled to multiples of the straight-line rate, with mandatory switch-to-SL to ensure full cost recovery.
5. **Choose WDV for assets that lose value fast** (vehicles, IT, machinery); choose straight-line for assets with even economic consumption (buildings, furniture).

As IFRS convergence continues and tax authorities tighten depreciation rules, expect more nuanced asset-class-specific schedules and tighter book-tax reconciliation requirements. Mastering WDV today positions you to read any depreciation schedule on any continent.

Ready to put this knowledge to work? Try Warren, your AI financial advisor — get personalized, conflict-free guidance at heywarren.com

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## Related Reading

**More from Warren**:
- [Assets Accounting Equation: A=L+E Explained Simply](/blog/accounting-equation)
- [Accounts Receivable: What It Is, How It Works, and Why It Matters](/blog/accounts-receivable)
- [Accrual Accounting vs. Cash Accounting: Key Differences and When Each Is Used](/blog/accrual-vs-cash-accounting)

**Authoritative sources**:
- [FASB — Accounting Standards Codification](https://asc.fasb.org/)
- [AICPA — Financial Reporting](https://www.aicpa-cima.com/topic/audit-assurance/financial-reporting)
- [SEC EDGAR — Company Filings](https://www.sec.gov/edgar/searchedgar/companysearch)