Understanding Depreciation Schedules: How to Create One + Impact on Taxes
Your business buys a $100,000 machine for the production line. You pay for it up front, but it'll keep running for years, so recording the full $100,000 as an expense this year would overstate your costs now and understate them later. Depreciation fixes that: you spread the cost across the years the machine is in use.
Businesses track depreciation by creating a depreciation schedule. If you look up examples of a schedule, you'll see complex tables with seemingly arbitrary percentages and calculations that can be overwhelming for a first-time business owner. That's why this guide explains how depreciation works, the calculations behind a schedule, the different methods for accounting and tax purposes, and the rules you should know for tax treatment and cash flow. We'll use that same machine as the running example throughout, giving it a four-year useful life and about $20,000 of value left at the end.
A depreciation schedule is only as accurate as the purchase records behind it. Slash, a business banking platform, captures the full detail of every purchase your business makes and syncs it to accounting tools like QuickBooks, Xero, and NetSuite, so the cost basis your schedule starts from is right from day one.¹ Continue reading to learn more.
What is a Depreciation Schedule?
A depreciation schedule is a table that tracks how much value a fixed asset loses each year over its useful life. The table lists:
- What you paid
- How much of that cost you've written off so far
- How much you're writing off this year
- And how much value is left
Depreciation doesn't apply to everything a business buys. Small, short-lived, or low-cost purchases are usually expensed the year you buy them, and most businesses set a capitalization threshold (often something like $2,500 per item), below which items are written off immediately rather than tracked on a schedule. Depreciation is for the larger, longer-lived assets you capitalize like vehicles and machinery.
For our business that purchased the $100,000 piece equipment, deducting all $100k in year one would understate the profit that first year and overstate it for the next three. Depreciation solves that by spreading the asset's cost across the years it helps produce revenue, so each year carries a fair share of the expense.
Most businesses track depreciation two ways by using a book schedule that follows accounting standards for financial reporting, and a tax schedule that follows IRS rules, which often differ.
How to Create a Depreciation Schedule: Example & Components
Here's an example of a depreciation schedule that uses the straight-line method for the $100,000 machine. Straight-line is the simplest method, so it's the clearest place to see what components and calculations are involved in creating a schedule:
Asset description: Production-line machine
Date placed in service: January 2026
Cost basis:$100,000
Useful life: 4 years
Salvage value:$20,000
Period 0 is the starting point, before any depreciation is taken. From there, the $80,000 depreciable base (cost minus salvage value) comes off in four equal $20,000 pieces, and the book value lands exactly on the $20,000 salvage value at the end of year four.
Here's what each field means:
- Asset description: What the item is, sometimes with an ID, location, or serial number if applicable.
- Date placed in service: The day the asset was ready and available for use, which isn't always the purchase date.
- Cost basis: The original cost, including tax, shipping, and installation.
- Useful life: How many years the asset is expected to stay productive.
- Salvage value: What you expect it to be worth at the end of its useful life, from resale or scrap.
- Current-period depreciation: The amount written off that year.
- Accumulated depreciation: The total written off to date.
- Book value: Cost basis minus accumulated depreciation (also called remaining or net book value).
Two of these fields call for judgment on your part. Useful life and salvage value together set the depreciable base (cost minus salvage value), which is the total amount you'll actually write off, $80,000 in the example above. Most businesses estimate both by looking at manufacturer guidance, their own experience with similar assets, and IRS class-life tables for how long comparable equipment is expected to last.
Assets are also usually grouped into categories (buildings, machinery and equipment, vehicles, furniture and fixtures, computers and technology), since useful lives and tax treatment vary by type. Land is the one common exception: it isn't depreciated, so when you buy property you separate the land value from the building and depreciate only the building.
Different Methods of Depreciation
In the example above we used straight-line depreciation because it's the simplest, but it isn't the only way to divide up an asset's cost. Which method you pick changes how much you deduct in any given year, and that timing can matter for both your books and your taxes. Here are the three you're most likely to run into:
Straight-Line Depreciation Schedule
Straight-line depreciation spreads the depreciable base evenly across every year of the asset's useful life, so the expense is identical each period. The formula for calculating depreciation in this method is the cost basis minus salvage value, divided by useful life.
A $22,000 vehicle with a $2,000 salvage value and a five-year life depreciates at $4,000 a year, every year, until its book value reaches the $2,000 salvage figure. The predictability makes it easy to budget and easy to audit, which is why most companies use it on their financial statements even when they use something else for taxes.
Accelerated Depreciation Schedule
Accelerated methods write off more of the cost in the early years and less later on. The two common approaches are declining balance (including double-declining balance, which applies double the straight-line rate to the asset's shrinking book value each year) and sum-of-the-years'-digits.
The logic is that many assets are most productive when new and lose value fastest early on, so the expense pattern can better reflect economic reality. Accelerated depreciation also pulls deductions forward, which can reduce taxable income sooner.
MACRS Depreciation
The Modified Accelerated Cost Recovery System (MACRS) is the depreciation method the IRS requires for most business assets on U.S. federal tax returns. You might use straight-line on your financial statements and MACRS on your tax return; since the two produce different numbers, most businesses keep separate schedules for their book and taxes.
MACRS isn't calculated from scratch. You can look up your asset's property class and recovery period in IRS Publication 946 to apply their published percentages and category timelines. Three things determine your deduction:
- Recovery period: the IRS sorts every asset into a property class with a set life, which is often shorter than the asset's real useful life. Computers, office machinery, and vehicles are 5-year property; office furniture and fixtures are 7-year; residential rental property is 27.5-year; and nonresidential real property is 39-year.
- Convention: a rule for how much you can deduct in the first and last years. Most equipment uses the half-year convention, which treats every asset as if it was placed in service halfway through the year, no matter the actual date.
- Percentage table: the IRS publishes a table for each recovery period. You multiply the asset's full cost by that year's percentage. One simplification worth noting: MACRS ignores salvage value, so you depreciate the entire cost basis, not cost minus salvage as you would on the books.
Here's how it plays out using the same $100,000 asset from earlier, this time treated as 5-year property for tax. Because the half-year convention splits the deduction across the first and last years, a 5-year asset depreciates over six calendar years:
Impact of Depreciation on Cash Flow & Taxes
Depreciation shows up as an expense on your income statement and accumulates on your balance sheet, but its two most practical effects land on your tax bill and your cash flow:
Impact on Taxes
Depreciation is tax-deductible. Because it reduces taxable income, it lowers what you owe, an effect called the depreciation tax shield: at a 21% rate, $10,000 of depreciation trims roughly $2,100 off your tax bill. Section 179 and bonus depreciation strengthen the effect by letting eligible businesses claim those deductions much sooner, sometimes entirely in year one.
Section 179 lets a qualifying business deduct the full cost of eligible assets in the year they're placed in service, up to an annual cap. As of 2026, that annual cap is $2,560,000, phasing out once total qualifying purchases pass $4,090,000. Many small and mid-sized businesses can write off an entire equipment purchase the year they make it. Larger companies with higher spend lose the deduction once their annual purchases cross the threshold.
Bonus depreciation allows a 100% first-year deduction on qualifying property placed in service after January 19, 2025, with no scheduled phase-down. That means there's no dollar ceiling the way there is with Section 179: a business can deduct the full cost of qualifying assets in year one no matter how much it spends.
Both let businesses pay less tax in the year they buy an asset that would otherwise be deducted gradually over its recovery period. The total you write off over the asset's life doesn't change, but the timing does. Eligibility, ordering, and state conformity vary, so confirm the current rules with a tax professional.
Impact on Cash Flow
Depreciation is a non-cash expense: you're deducting a cost you paid for in an earlier period, so recording the expense moves no cash out of the business today. To see why that matters, it helps to know how a cash flow statement is put together. Most businesses use the indirect method, which starts from net income (the bottom line of the income statement) and then adjusts it back to actual cash by reversing anything that affected profit without affecting the bank balance.
Depreciation is the classic example. It was subtracted as an expense when calculating net income, but no cash actually left the business for it, so the indirect statement adds it back near the top of the operating section. The add-back doesn't create cash; it just undoes a non-cash deduction so the statement reflects the cash the business generated.
The practical takeaway is that a business can report low or even negative net income because of heavy depreciation while still producing healthy operating cash flow. Reading the income statement and the cash flow statement together keeps you from mistaking a depreciation-driven paper loss for an actual cash shortfall.
Track Every Purchase in One Place with Slash
Depreciation is one piece of a larger job: keeping an accurate record of what your business owns and spends. Slash is a business banking platform built for companies at any stage that can give you more modern tools to manage your finances. Every purchase your team makes is tracked in one place, transaction records are automatically categorized and matched with supporting invoices and receipts, and you get a real-time view of your cash flow and spending trends with the analytics dashboard. There are no monthly fees and no personal guarantee required to get started.
Slash integrates two-ways with QuickBooks Online, Xero, Sage Intacct, DualEntry, and NetSuite, so your records are updated in your accounting software without manual reentry. That means the cost basis and purchase dates your depreciation schedule relies on stay accurate and current, instead of needing to piece things together from memory at tax time.
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Frequently Asked Questions
Why do you need a depreciation schedule?
It keeps your asset values accurate on your financial statements, supports the deductions you claim on your tax return, and gives lenders, auditors, and buyers a clear record of your numbers. It also flags when equipment is nearing the end of its useful life and may need replacing.
What's the difference between depreciation and amortization?
Both spread an asset's cost over time, but depreciation applies to tangible assets like equipment and vehicles, while amortization applies to intangibles like patents and software. Put simply, depreciation is for things you can touch and amortization is for things you can't.
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What is a MACRS Depreciation Schedule?
It applies the Modified Accelerated Cost Recovery System, the method required for most business assets on U.S. federal tax returns. Each asset gets a property class and recovery period, and IRS percentage tables set each year's deduction, front-loading the write-off for shorter-lived assets. Because MACRS usually differs from the straight-line method used on the books, most businesses keep a separate MACRS schedule for tax.
Is depreciation tax deductible?
Yes. It's a deductible expense that reduces taxable income over the asset's recovery period, and Section 179 and bonus depreciation can let eligible businesses deduct much or all of the cost in year one. Rules and limits vary by state and change over time, so confirm the current details with a tax professional. This is general information, not tax advice.
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