Ever bought something for your business, used it for a while, then realized the number you're depreciating doesn't match what you actually put into it? That gap can cost you real money. And it's not just about math — it's about knowing what the IRS lets you add to your basis before you start writing things off.
The short version is this: basis for depreciation is the starting line for how much you can deduct over time. So get it wrong and you either overpay or raise a flag. So which of the following will increase basis for depreciation? Let's actually dig into that, because most quick-answer lists leave out the messy parts.
What Is Basis for Depreciation
Basis for depreciation is, plain and simple, the amount you're allowed to spread out as deductions across an asset's useful life. Think of it as the "cost bucket" you're permitted to empty a little each year. Worth adding: if you buy a machine for $10,000, that's usually your starting basis. But life isn't that clean.
The adjusted basis is what matters once you've owned something a while. It goes up when you add to the asset, and down when you take deductions or get reimbursements. Think about it: it doesn't. Because of that, here's the thing — people hear "depreciation" and assume the number only ever shrinks. Certain real costs make that bucket bigger before the draining even starts.
This is the bit that actually matters in practice.
Cost Basis vs Adjusted Basis
Cost basis is what you paid to acquire the property. Adjusted basis is cost basis plus improvements, minus depreciation taken, minus certain deductions or credits. When we talk about what increases basis for depreciation, we're really talking about things that bump up the adjusted basis before or during the depreciation schedule.
Why "Basis" Isn't Just a Tax Word
In practice, basis affects gain when you sell, deductions while you hold, and how much recapture hits you later. It's the spine of the whole asset story. Miss a legitimate addition and you've quietly donated to the government Less friction, more output..
Why It Matters / Why People Care
Why does this matter? In practice, because most people skip the boring add-ons and just depreciate the sticker price. Turns out, that's leaving deductions on the table.
Say you buy a rental property. But you pay legal fees, title insurance, and then later put a new roof on. Practically speaking, those aren't pocket change. The purchase price is your starting point. If you don't fold them into basis, you depreciate less than you're entitled to — and when you sell, your taxable gain looks bigger than it should And that's really what it comes down to..
Quick note before moving on.
And look, the opposite mistake is just as bad. Here's the thing — inflate basis with stuff that doesn't count and you've got an audit problem. So knowing exactly which of the following will increase basis for depreciation keeps you both compliant and efficient. Real talk: this is where DIY bookkeeping often breaks Small thing, real impact..
How It Works (or How to Do It)
Here's where we get specific. Worth adding: the question "which of the following will increase basis for depreciation" usually shows up as a multiple-choice list: things like repairs, improvements, casualty losses, or personal use. Let's break down what actually moves the number up Still holds up..
Purchase Price and Closing Costs
The obvious one. Here's the thing — what you pay to acquire the asset is the foundation. For real estate, that includes the contract price plus certain closing costs — legal fees, recording fees, title insurance, survey costs. Those aren't current expenses; they're part of the cost basis. So they increase basis for depreciation from day one Simple as that..
Capital Improvements
This is the big one people underuse. Finished basement? Because of that, a capital improvement adds value, extends life, or adapts the asset to a new use. That said, paving the parking lot at your shop? Basis. That's basis. New HVAC system in a rental? Basis Practical, not theoretical..
Improvements are different from repairs. A repair keeps something in working order — painting a wall, fixing a leak. That's usually deducted now, not added to basis. But the new roof, the room addition, the upgraded electrical panel — those increase basis for depreciation because they're enduring.
Legal and Professional Fees Tied to the Asset
If you pay an attorney to draft the purchase agreement for a building, or an engineer to certify a structure, those costs attach to the asset. Practically speaking, they aren't overhead. They're part of what it took to get the depreciable thing into service. I know it sounds simple — but it's easy to miss when those invoices hit your operating account Practical, not theoretical..
Assessments for Local Improvements
Here's one even some accountants forget. If the city assesses your property for a sidewalk or sewer line, and it's not just maintenance, that assessment increases your basis. It's a permanent addition to the property's value. Worth knowing if you get one of those letters from the municipality Small thing, real impact..
Certain Carrying Costs During Construction
If you're building something and paying property taxes or interest before it's ready, those can be capitalized. On top of that, that means they go into basis rather than hitting as an expense. Same with architectural fees. The asset isn't depreciating yet, but the basis is quietly growing.
What Does NOT Increase Basis
To be useful, we have to name the false friends. Repairs and maintenance don't increase basis — they're expensed. Casualty losses decrease basis (or are handled separately). Consider this: personal use of a business asset doesn't add to basis; if anything it complicates the math. And normal operating costs after the asset is in service? Not basis Still holds up..
So when a list asks which of the following will increase basis for depreciation, the winners are: purchase cost, closing costs, capital improvements, asset-related legal fees, local improvement assessments, and pre-service carrying costs. The losers are repairs, losses, and routine ops.
Common Mistakes / What Most People Get Wrong
Honestly, this is the part most guides get wrong. Even so, they treat "repair vs improvement" like a checkbox. Worth adding: it isn't. The IRS has a whole framework (look up the tangible property regulations if you want a headache) about when something is betterment, adaptation, or restoration — all of which bump basis — versus a simple fix.
Another miss: people forget that basis increases can happen years after purchase. Put a new driveway in year four? That's a basis add in year four, and you depreciate the addition over its own schedule. Most folks just write a check and forget it at tax time.
And here's a subtle one. Plus, if you take a deduction for energy credits or excluded grants, your basis often has to be reduced by that amount. So the increase from the improvement might be partly offset. Sounds contradictory? Which means it is, a little. But that's the rule.
Practical Tips / What Actually Works
Keep a separate capital ledger for each asset. Not a spreadsheet tab called "stuff" — an actual record of every cost that could be basis. Even so, date, vendor, reason, amount. When the question comes up, you're not reconstructing memory.
Talk to your tax person before big projects, not after. In practice, " is a question to ask in March, not on extension deadline day. So naturally, "Is this a repair or an improvement? And if you're a landlord, get in the habit of walking the property with a "basis lens" — what here is permanently better than when I bought it?
Use the de minimis safe harbor for small stuff so you're not capitalizing $40 faucets. But don't use it as an excuse to expense the $8,000 deck. The short version is: match the treatment to the durability Simple as that..
One more. Document the useful life you assign. Even so, if you add basis with an improvement, note the class life. It saves a world of pain if basis ever gets questioned.
FAQ
Does a repair ever increase basis for depreciation? No. A repair keeps the asset in its normal condition and is usually deducted as an expense. Only improvements, additions, or permanent upgrades increase basis.
Are closing costs included in basis for rental property? Yes, many of them. Title insurance, legal fees, recording fees, and survey costs typically get added to basis. Routine moving or personal costs do not.
If I add a room to my office building, how does that affect depreciation? It increases your basis. The cost of the addition is capitalized and depreciated, often over a schedule tied to the improvement's useful life rather than the whole building's.
Do casualty losses increase or decrease basis? They decrease basis, or are accounted for separately as a loss. They do not increase basis for depreciation No workaround needed..
**Can I increase basis after I've already started depreci
ating the original asset?
Yes. In real terms, when you capitalize a later improvement, it starts its own depreciation clock based on the improvement’s placed-in-service date and recovery period. Basis additions are tracked separately from the original asset’s depreciation stream. You don’t go back and rewrite the history of the original asset — you simply layer the new basis on top, which is why a clean capital ledger matters so much once a property is several years into its life Most people skip this — try not to..
What if I inherited the property instead of buying it?
Your starting basis is generally the fair market value at the date of inheritance, not what the original owner paid. Which means improvements you make after that point still increase your basis the same way, but the pre-inherited history is irrelevant for your depreciation. This is one of the few times the “basis bump” comes from outside your own wallet.
Conclusion
Basis isn’t a one-time number you set on closing day and forget — it’s a living figure that moves with every capitalized improvement, every eligible closing cost, every energy credit offset, and every casualty loss. On top of that, keep the records, ask the timing questions early, and match each expense to its true nature. Also, the taxpayers who avoid surprises are the ones who treat basis like a running ledger rather than a memory test. Do that, and depreciation stops being a guessing game and starts being just another line you can defend Worth keeping that in mind. Turns out it matters..
