Calculating your first year depreciation is straightforward once you know the Declining Balance Depreciation formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Declining Balance Depreciation Calculator.
What is Declining Balance Depreciation?
The Declining Balance Depreciation calculation tells you your first year depreciation from a few simple inputs. The figure you are solving for here is the first year depreciation, expressed in INR.
The Declining Balance Depreciation formula
The core formula is:
First year depreciation = Asset cost (book value) × Depreciation rate ÷ 100Here is what each input means:
- Asset cost (book value) — a money amount. Example: ₹1,00,000.
- Depreciation rate — a percentage, such as an annual rate. Example: 2%.
How to calculate it step by step
- Write down the asset cost (book value) (for example, ₹1,00,000).
- Write down the depreciation rate (for example, 2%).
- Apply the formula above to get your first year depreciation.
- Double-check the result with the Declining Balance Depreciation Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Asset cost (book value) | ₹1,00,000 |
| Depreciation rate | 2% |
| First year depreciation | ₹20,000 |
| Book value after year 1 | ₹80,000 |
With asset cost (book value) of ₹1,00,000 and depreciation rate of 2%, the first year depreciation works out to ₹20,000.
Example 2
With asset cost (book value) of ₹2,00,000 and depreciation rate of 2%, the first year depreciation works out to ₹40,000.
| Result | Value |
|---|---|
| First year depreciation | ₹40,000 |
| Book value after year 1 | ₹1,60,000 |
Example 3
With asset cost (book value) of ₹50,000 and depreciation rate of 2%, the first year depreciation works out to ₹10,000.
| Result | Value |
|---|---|
| First year depreciation | ₹10,000 |
| Book value after year 1 | ₹40,000 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Declining Balance Depreciation Calculator does it instantly, for free, with the formula and a worked example built in.
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