The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →To calculate straight-line book depreciation for a computer, subtract its estimated residual value from its capitalized cost, then divide by its estimated useful life. For US federal income-tax purposes, computers and peripheral equipment generally fall into the five-year MACRS class, but that tax recovery period is not a default useful life for financial statements. Book depreciation and tax deductions are separate calculations.
Book depreciation: use this formula
Under IAS 16, depreciation is “the systematic allocation of the depreciable amount of an asset over its useful life.” The depreciable amount is generally the asset’s cost less its estimated residual value. The method should reflect how the asset’s economic benefits are expected to be consumed; straight-line is one possible method, not a rule for every computer. See IAS 16, Property, Plant and Equipment.
Annual straight-line depreciation = (capitalized cost − residual value) ÷ estimated useful life
- Capitalized cost: the amount recorded as the asset’s cost under the applicable accounting policy.
- Residual value: the estimated amount recoverable when the asset reaches the end of its useful life.
- Useful life: the period the entity expects to use the asset, based on its circumstances and expected use.
Illustrative calculation
Suppose a computer has a capitalized cost of $2,000, an estimated residual value of $200, and an estimated useful life of four years. For a full year using straight-line depreciation: ($2,000 − $200) ÷ 4 = $450 annual depreciation. After one full year, its carrying amount would be $1,550 before impairment or other adjustments. These figures illustrate the arithmetic; they are not a recommended computer life or resale estimate.
Recommended Free Tools
#1 Best Overall
- BEST-SELLING HARDCOVER JOURNAL: This classic 5.6" x 8" vegan leather journal features a durable and water-resistant cover, 160 college ruled lined pages, inner expandable pocket, sticker labels, ribbon bookmark & elastic closure band.
- PREMIUM PAPER: Made with high-quality, 100 gsm acid-free paper in light ivory color, our journal paper is thicker than average notebooks & note pads, so you can confidently use most pens, pencils, and markers without ghosting and bleed-through.
- LAY FLAT DESIGN FOR WRITING EASE: Our thread-bound, college ruled notebook is designed to lay flat, making it easier to write for both right and left-handed users. It’s the perfect notebook for journaling, note taking and planning.
- INNER POCKET: Includes an expandable inner storage pocket to store appointment cards, notes, receipts, and more. Personalize your journal cover & spine with the sheet of sticker labels included.
- VERSATILE LINED NOTEBOOK: Ideal for journaling, note-taking, planning, or creative writing. Whether you're making a to-do list, capturing ideas, or writing notes, this journal makes a perfect notebook for school, work, or home office.
For a partial first reporting period, apply the entity’s policy and relevant accounting framework. IAS 16 does not establish a universal useful life or residual value for computers; estimates should reflect the asset and be reviewed as required by the applicable framework.
US federal tax: a separate calculation
For tax, depreciation is a deduction for recovering the basis of certain property over the time it is used. The IRS says depreciation generally begins when property is “placed in service”—ready and available for its intended business or income-producing use. Buying a computer does not necessarily mean it is already placed in service. The IRS’s Publication 946 explains the rules.
Rank #2
- 【Hardcover Leather Journal Notebook】Our Lined journal made from high quality thickened hardcover leather and have a luxurious high-grade looks. Which is not only beautiful, but also more comfortable and delicate to touch. What's more, the notebook adopts a sturdy thread sewn edge process to ensure that the leather and will not fall off, stand the test of time. With this exquisite water-resistant hard cover, you can rest assured that your journal will be a cherished keepsake for years to come.
- 【256 Numbered Pages with Contents】 This journal notebook is specifically designed to provide you with all the writing space you need. It includes 256 pages numbers and a 3-page blank table of contents, you can jot down important notes from various pages and note them in the front of the book for easy and fast reference. 80Gsm acid-free ivory paper that's smooth to the touch and thicker than your average notebook. Which ensures that there will no ghosting or bleed-through on your pages.
- 【A5 Upgrade Journal Notebook】The journaling notebooks also feature 3 colored ribbon bookmarks, allowing you to easily keep track of important pages. 2 elastic closure design ensures that the notebook remains securely closed, keeping your notes and thoughts confidential. 1 back inner pocket for stashing notes etc. Including 1 elastic pen loop and 2 index tabs stickers. A5 size 5.75'' × 8.38'', perfect size for carrying around or put into your bag or purse, perfect addition to your daily routine!
- 【180° Lay Flat Design】The 180° lay flat design, combined with a sturdy thread-bound binding, the leather notebook can easily to lay out flat makes taking notes more efficient, reading more convenient, which provide a comfortable writing experience. Rounded corner design makes the lined notebook not easy to be damaged and curled. Standard 8mm space classic college ruled journals, each journal page has “Memo No” and “Date” header to help you keep track of the date.
- 【Wide Usage & Ideal Gifts】The leather bound journal is ideal for men women, perfect for business, school, office, home, work, college, students, adults, travelers, scientists, and people in many other fields. Suitable for writing, study, daily journals, drawing, travel, diary notebooks or for taking notes in college classes. Whether it's a birthday, anniversary, or graduation, Mothers Day,Fathers Day,Valentine's Day, Christmas, Halloween, New Year, this notebook will make an excellent gift.
For US federal tax, the IRS lists computers and peripheral equipment as five-year MACRS property. That is a tax classification, not a claim that every organization should use a five-year book life. Tax deductions depend on the applicable basis, method, convention, placed-in-service timing, business or income-producing use, and any elections or special allowances. Do not apply a book residual value mechanically to the tax calculation.
Illustrative IRS MACRS percentages for five-year property
The IRS’s 2025 table lists these recovery percentages for five-year property under the half-year convention. They are tax-year-specific guidance; verify the correct convention and rules for the actual tax year before calculating a deduction.
Rank #3
- 【320 Pages Hardcover Thick Notebook】This faux leather journal notebook A5 (5.7'' X 8.4'') size lined notebook journal has a total of 320 pages (including 6 catalog pages), 7mm space classic college ruled notebook, providing you with plenty of writing space.
- 【100GSM Premium Paper】The notebook journal is made of 100gsm ivory thick paper, the paper is smooth, the writing is smooth, and the ink will not bleed, suitable for most pens. Our leather notebooks feature a 180° lay-flat design for easy writing, easier reading and more efficient note taking.
- 【Notebook Features】The journal has 6 Contents Pages to log more entries, No more worrying about not having enough index pages; 3 Exquisite ribbon bookmarks to help you find content faster; 1 Elastic closure strap to keep the notebook closed; 1 Double-stitched elastic pen holder ring, can hold most pens; 1 Inner pocket for appointment cards, notes, receipts and more.
- 【Great Use】Thick hardcover notebook journal is ideal for office, school and home use, and is a great gift choice for women, men, business executives, college, students and people in many other fields. It can be used as personal writing journal, daily journal, to do list notebook, business notebooks, work notebooks, college ruled notebook, note taking journal and more.
- 【After-sales Service】Each leather journal notebook comes with 1 gift of multicolor index tabs stickers for papers classifying and marking. If you receive the notebook is damaged or have any problems in the process, please contact us, we will be the first time for you to solve all your problems!
| Recovery year | Percentage of applicable basis |
|---|---|
| 1 | 20.00% |
| 2 | 32.00% |
| 3 | 19.20% |
| 4 | 11.52% |
| 5 | 11.52% |
| 6 | 5.76% |
These percentages apply to the relevant depreciable basis remaining after any applicable section 179 deduction or special depreciation allowance. Eligibility, elections and the correct convention matter, so the table alone does not determine a taxpayer’s deduction.
Tax-year 2025 provisions are not timeless limits
For tax year 2025, the IRS describes a maximum section 179 deduction of $2,500,000, reduced when the cost of section 179 property placed in service exceeds the $4,000,000 investment threshold. Publication 946 for 2025 also describes a 40% special depreciation allowance for certain qualified property acquired before January 20, 2025 and placed in service during the specified 2025 window, and a 100% allowance for certain qualified property acquired and placed in service after January 19, 2025. Eligibility and elections apply, and these rules should not be carried into another tax year without checking current guidance. Consult IRS Publication 946 for the relevant year.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How book and tax depreciation differ
| Question | Financial statements under IAS 16 | US federal income tax |
|---|---|---|
| Purpose | Allocate an asset’s depreciable amount over its useful life. | Recover eligible business or income-producing property basis through tax deductions. |
| Life or class | Estimated useful life based on expected use and circumstances. | Statutory MACRS property class; computers and peripherals generally fall into the five-year class. |
| Residual value | Used to determine the depreciable amount. | Tax basis and statutory rules apply; book residual value is not automatically imported. |
| Method | Choose a method reflecting the expected pattern of consumption; straight-line is one option. | Use the applicable MACRS method and convention, subject to rules and elections. |
| Updates | Review estimates and method as required by the reporting framework. | Check IRS guidance and tax-year law for the relevant year. |
IAS 16 applies to IFRS reporting; it is not the accounting rule for every jurisdiction or national GAAP. The tax example here is limited to US federal rules. Other countries’ tax systems and accounting frameworks may differ.
Keep a record for each computer
A depreciation schedule helps keep the financial-statement calculation distinct from the tax calculation. Record:
Best Value
- Secure Grip Journal Clamp: This notebook clip tightly clamps bulky documents, planners, or sketchbooks without slipping. Ideal as a travelers notebook clip to hold the journal open, it keeps your pages flat and organized for effortless reading or writing.
- Effortless Operation Notebook Clip: Whether you use it as a notebook clip or journal clamp, it allows smooth, quick page changes without straining your hand, perfect for daily journaling or office tasks.
- Damage-Free Hold: Crafted from durable zinc alloy with snag-free edges, this brass notebook clip securely grips paper without leaving crimp marks or tears, while adding a vintage touch.
- Versatile Travelers Notebook Clip: Measuring 3.35 x 1.26 inches, this journal clip is perfectly sized for standard journals, planners, and art portfolios. Use it as a journal clamp to mark sections, hold receipts, or organize bills.
- Vintage Brass Finish: Featuring a distressed antique bronze coating, this notebook clip resists fading and corrosion, making it a decorative yet practical accessory for any workspace or stationery collection.
- Asset description and acquisition date.
- Placed-in-service date.
- Capitalized cost or basis.
- Business-use percentage, where relevant.
- For book reporting: estimated useful life, residual value, method and accumulated depreciation.
- Separately for tax: method, convention and any applicable elections or special allowances.
The actual book life and tax deduction cannot be determined from the asset label alone: they depend on the reporting basis or jurisdiction, dates, cost, use, estimates and applicable tax rules.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
