A single $10 depreciation charge shows up in three places at once, and understanding how depreciation affects the three financial statements comes down to tracing that one entry. On the income statement, the $10 is an expense that reduces net income. On the balance sheet, it reduces the book value of the asset and, when the books close, reduces retained earnings by the same amount. On the cash flow statement, it gets added back to net income because no cash actually left the business. The three effects are tied together by one journal entry, and once you see that entry, the rest follows.
The Journal Entry Behind Every Effect
Depreciation begins with a two-line entry. Debit Depreciation Expense for $10. Credit Accumulated Depreciation for $10.
The debit is a temporary account. It lives on the income statement for the period, then closes into retained earnings when the period ends. The credit is permanent. Accumulated Depreciation is a contra-asset account that sits on the balance sheet and keeps growing as long as you own the asset. Record $10 a month for a year, and Accumulated Depreciation shows $120 by December while the original cost line stays exactly where it started.
Every effect described below traces back to those two lines.
What Happens on the Income Statement
The $10 lands in operating expenses, so operating income falls by $10. A business with $100 in revenue and $50 in other operating costs would report $50 of operating income before depreciation and $40 after. That $10 reduction carries all the way down through pre-tax income and into net income.
Because pre-tax income is lower, so is the tax bill. The federal corporate rate is a flat 21%, which means a $10 deduction saves about $2.10 in federal tax. Once state corporate income tax is added in, a combined effective rate of 25% to 28% is common; at 25%, the same $10 deduction saves $2.50.
The number you record for book purposes doesn’t have to match what appears on the tax return. For tax, the IRS generally requires businesses to depreciate property placed in service after 1986 using the Modified Accelerated Cost Recovery System, or MACRS.1Internal Revenue Service. Topic No. 704, Depreciation MACRS front-loads deductions, so a company’s book depreciation and tax depreciation for the same asset can differ substantially in any given year.
EBIT and EBITDA Treat Depreciation Differently
Two profitability metrics handle the $10 in opposite ways. EBIT (earnings before interest and taxes) includes depreciation as an expense, so the $10 reduces EBIT the same way it reduces operating income. EBITDA (earnings before interest, taxes, depreciation, and amortization) strips depreciation back out, so the $10 has no effect on EBITDA at all. Analysts often look at both: EBIT shows profitability after accounting for the wearing-out of long-lived assets, and EBITDA approximates operating cash generation before those capital costs.
What Happens on the Balance Sheet
The $10 credit to Accumulated Depreciation reduces the asset’s book value. Suppose you bought equipment for $100 and had already accumulated $60 in depreciation. The book value stood at $40. After this month’s $10 charge, Accumulated Depreciation climbs to $70, book value drops to $30, and the original cost line is untouched at $100. The difference between original cost and accumulated depreciation is the carrying amount, sometimes called net book value.
The other side of the balance sheet also moves. The $10 reduction in net income flows into retained earnings when the period closes (assuming no offsetting dividends), so equity falls by $10. Assets are down $10 on the left. Equity is down $10 on the right. The accounting equation still balances, which is the clearest sign that a single non-cash entry has done real work in two places at once.
What Happens on the Cash Flow Statement
Most companies build the operating activities section using the indirect method, which starts with net income and adjusts for anything that hit income without moving cash. Depreciation is the standard example. The $10 was subtracted in getting to net income, but no check was written and no cash left the bank, so the $10 is added back.2Internal Revenue Service. Publication 946 – How To Depreciate Property
The add-back is a correction, not a source of cash. Depreciation doesn’t generate money. It artificially lowered the number the statement started with, and the add-back reverses that effect. After it, cash flow from operations sits $10 higher than net income, all else equal.
The genuine cash benefit is the tax shield. If the $10 deduction cut federal tax by $2.10, that $2.10 is money the business kept rather than paid to the IRS. That’s the actual cash the depreciation charge produced in the period. Companies that use the direct method, listing cash receipts and payments instead of adjusting net income, never show depreciation on the cash flow statement at all; the tax savings simply appear as a smaller cash payment for income taxes.
How the Numbers Change With Method and Timing
The $10 in these examples is a placeholder. The actual periodic charge depends on the depreciation method. Straight-line divides cost (less any salvage value) evenly across the asset’s expected life, producing the same expense every year and a smooth decline in book value. Most companies use straight-line for financial reporting. Accelerated methods, including the 200% and 150% declining balance conventions used under MACRS, front-load the expense, producing bigger deductions early and smaller ones later.2Internal Revenue Service. Publication 946 – How To Depreciate Property The three-statement pattern is the same either way. Only the size of the periodic hit changes.
When the Three-Statement Pattern Doesn’t Apply
Not every asset purchase produces a small periodic charge. Section 179 lets a business deduct the full cost of qualifying equipment, vehicles, and software in the year it is placed in service, subject to a base deduction limit of $2,500,000 for 2026 with a phase-out beginning above $4,000,000 of qualifying property.3Office of the Law Revision Counsel. 26 USC 179 – Election To Expense Certain Depreciable Business Assets Bonus depreciation under Section 168(k) allows a 100% first-year deduction for most qualified property acquired and placed in service after January 19, 2025, with no dollar cap. The de minimis safe harbor lets a business expense small items immediately, $5,000 per item with audited financial statements or $2,500 without.4Internal Revenue Service. Notice 2015-82 – Increase in De Minimis Safe Harbor Limit In each case, the entire cost hits the income statement in one period rather than being spread across years.
Depreciation Is Deferred, Not Forgiven
The tax benefit of depreciation is not permanent. When you sell a depreciated asset for more than its remaining book value, the IRS reclaims part of what you deducted. If you bought equipment for $100, took $70 of depreciation, and sold it for $50, the adjusted basis is $30 and the gain is $20. Under Section 1245, that $20 is taxed as ordinary income up to the amount of depreciation previously claimed.5Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property Real property follows a different rule, with unrecaptured Section 1250 gain taxed at a maximum federal rate of 25%. Each period’s depreciation lowers both taxable income and the asset’s basis at the same time, which sets up a larger taxable gain at disposal. The three-statement effect is real in the period it occurs, and the tax savings are real cash, but the full accounting isn’t settled until the asset leaves the business.