Depreciation Calculator
The Depreciation Calculator estimates a cost estimation estimate for your scenario from the quantities, rates, period, units and other assumptions requested on the page. Replace the example values with your own depreciation figures and recalculate after changing an assumption. Use it to compare scenarios, then verify any current rate or fee before acting.
[updated year 2026]
Calculate linear fixed asset depreciation
Depreciation per year
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Depreciation per month.
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Depreciation rate per year
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❓ Frequently Asked Questions
What is the depreciation rate under Thai law?
Buildings 5% per year Machinery 20% per year Computers/Software 33% per year Vehicles 20% per year Furniture 10% per year
What is the linear depreciation method?
Depreciation per year = (cost price - scrap value) ÷ useful life. For example, the machine price 500,000 baht age 5 year scrap value 50,000 baht depreciation = 90,000 baht/year
How does depreciation affect taxes?
Depreciation is a tax deductible expense that reduces accounting profits and net profits before taxes, reducing corporate tax liabilities.
What are the depreciable assets?
Depreciable assets include buildings, machinery, vehicles, furniture, computers, but land is not depreciable.
English calculator guide
How to use the Depreciation Calculator
Use this page to test a specific depreciation scenario. Enter your own values in the calculator above, review the units beside each field, and recalculate after changing an assumption. The result updates the depreciation estimate instead of relying on a generic example.
- Build a baseline depreciation case with figures that match your situation.
- Run a second depreciation case after changing the rate, period, quantity or other key assumption.
- Record the difference between the two depreciation results and the input responsible for it.
Inputs for the depreciation estimate
For this depreciation calculation, check the quantities, rates, period, units and other assumptions requested on the page. The result is designed to show a cost estimation estimate for your scenario, not a guaranteed provider price or official decision.
How the depreciation result is calculated
The calculator combines the entered quantities, rates and fixed costs to produce the displayed estimate. Reusing the same depreciation inputs will produce the same estimate, which makes the page suitable for controlled scenario comparisons.
Checks for a depreciation decision
Confirm any current rate, threshold or provider rule that could change the final amount. For depreciation, Use the result as a commercial planning estimate. Confirm supplier prices, payment-provider fees, taxes, minimum charges and contract terms before setting a price or budget. Check the important inputs and any current provider or authority rules before using the result for a decision.
- Language QA
- Terminology, numeric values and calculator controls checked
- Calculator scope
- Cost estimation
- Last English review
- 26 July 2026