Accounting learning tool
Straight-Line Depreciation Calculator
Allocate an asset's depreciable amount evenly over its useful life.
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Understand Straight-line depreciation
One idea, three depths
Choose how deeply to explain Straight-line depreciation
Straight-line depreciation: Allocate an asset's depreciable amount evenly over its useful life.
Age 5 Explain it to a 5-year-old Start with a picture
Imagine keeping labelled boxes for everything a business owns, owes, earns and spends. This tool helps check one part of those records. For example: A $50,000 asset with $5,000 residual value and five-year life depreciates by $9,000 annually. The answer tells you Annual depreciation.
Age 15 Explain it to a 15-year-old Connect it to the formula
Straight-line depreciation recognises an equal expense in each full period when consumption is expected to be even. The rule is Annual depreciation = (Asset cost − residual value) ÷ useful life. Its input values are Asset cost, Residual value, Useful life (years), Years depreciated (years), and the main result is Annual depreciation. For example: A $50,000 asset with $5,000 residual value and five-year life depreciates by $9,000 annually.
College Explain it at college level State the model precisely
This calculator evaluates one accounting relationship within a consistent entity, currency, reporting period and recognition policy. The implemented relation is Annual depreciation = (Asset cost − residual value) ÷ useful life, evaluated from Asset cost, Residual value, Useful life (years), Years depreciated (years) to produce Annual depreciation. Straight-line depreciation recognises an equal expense in each full period when consumption is expected to be even. Recognition, measurement, tax, consolidation, foreign-currency and disclosure rules may require adjustments under the accounting framework that applies to the entity.
What this accounting tool does
Allocate an asset's depreciable amount evenly over its useful life.
Why the relationship works
Straight-line depreciation recognises an equal expense in each full period when consumption is expected to be even.
The accounting formula
Annual depreciation = (Asset cost − residual value) ÷ useful life
Inputs and period consistency
This model uses Asset cost, Residual value, Useful life, Years depreciated. Use the same reporting period, currency, entity boundary and accounting policy for every input.
What the result means
The primary output is Annual depreciation; supporting outputs include Accumulated depreciation, Closing book value. Trace each amount back to the relevant ledger or statement line before relying on it.
Worked accounting example
A $50,000 asset with $5,000 residual value and five-year life depreciates by $9,000 annually.
Limits of this compact model
The calculator teaches one relationship. Recognition, measurement, tax, consolidation, foreign-currency and disclosure rules may require additional adjustments under the framework that applies to the entity.
Continue with a free textbook
OpenStax reading and academic references
Use the calculator as the worked interaction, then continue into the peer-reviewed textbook context. MW SysArc links to OpenStax; the explanation on this page is original and does not reproduce the book.
Principles of Accounting, Volume 1: Financial Accounting
Read the free OpenStax financial accounting textbookCite this book
- APA 7
- Franklin, M., Graybeal, P., & Cooper, D. (2019). Principles of accounting, volume 1: Financial accounting. OpenStax. https://openstax.org/books/principles-financial-accounting/pages/1-why-it-matters
- MLA 9
- Franklin, Mitchell, et al. Principles of Accounting, Volume 1: Financial Accounting. OpenStax, 2019, https://openstax.org/books/principles-financial-accounting/pages/1-why-it-matters.
- Chicago author-date
- Franklin, Mitchell, Patty Graybeal, and Dixon Cooper. 2019. Principles of Accounting, Volume 1: Financial Accounting. Houston, TX: OpenStax. https://openstax.org/books/principles-financial-accounting/pages/1-why-it-matters.
OpenStax books are free to read online. Their current reuse licence is CC BY-NC-SA; follow the licence shown on the linked book before redistributing or adapting its content.
Clear answers
Frequently asked questions
What does the Straight-line depreciation do?
Allocate an asset's depreciable amount evenly over its useful life.
How does the Straight-line depreciation work?
The calculator applies Annual depreciation = (Asset cost − residual value) ÷ useful life. Straight-line depreciation recognises an equal expense in each full period when consumption is expected to be even.
What can I learn from the Straight-line depreciation?
You will connect Asset cost, Residual value, Useful life, Years depreciated to Annual depreciation, then see how the relationship belongs in the accounting process.
Does MW SysArc receive or store what I enter?
No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.
How should I use the result?
Use the result as an educational or reconciliation reference. Confirm the reporting period, accounting policy and source records before relying on it.
Last reviewed 2026-07-21. Calculations tested 2026-07-21.