Real Estate Tax Calc
Establish your depreciable basis on day one
The most important first-year move is computing and documenting your depreciable basis. Your depreciable basis is the cost of the building — the purchase price plus capitalized closing costs minus the value allocated to land. Land is not depreciable, so the split between land and building determines how large your annual depreciation deduction will be for the entire ownership period.
To allocate the purchase price, use the county tax assessor's land-to-improvement ratio at the time of purchase, or commission an appraisal. A property bought for $350,000 where the county values land at 25% of total value has a depreciable basis of roughly $262,500 — generating about $9,545 of annual depreciation for a residential rental over 27.5 years. Document the allocation method, keep the tax assessment or appraisal, and record this with your first return.
Know your placed-in-service date
Depreciation begins when the property is placed in service — available and ready for rent — not when you first collect rent or when you purchased it. If you buy a vacant property on October 1 and spend November renovating, depreciation starts when the property is available to rent, say December 1. You get two months of depreciation in year one using the mid-month convention.
Placed-in-service documentation matters: keep evidence of when you listed the property (rental listing printout), when you made it available (utility hookup date, listing date), and when the first tenant moved in. If the IRS questions your placed-in-service date, your records determine whether you get the first year's depreciation or lose it.
Capitalize versus deduct: the repairs-versus-improvements decision
In the first year — especially if you renovated before renting — you face the repair-versus-improvement decision on every expenditure. Under the tangible property regulations, costs that improve the property (betterment, restoration, or adaptation to a new use) must be capitalized and depreciated, not expensed. Costs that merely maintain the property in its existing condition are deductible as ordinary repair expenses.
The distinction matters most for pre-rental renovation costs. A new kitchen that materially upgrades the property from its previous condition is a capital improvement; fixing a leaking pipe under the same kitchen is a repair. Costs you capitalize in year one are depreciated over many years; costs you deduct reduce income immediately. Getting this right — neither over-capitalizing (losing current deductions) nor under-capitalizing (claiming improper deductions that could be challenged) — requires categorizing each invoice.
The de minimis safe harbor (tangible property regulations) allows you to deduct items costing $2,500 or less per invoice or per item without capitalizing, if you have a written accounting policy in place at the start of the year. Set up this policy (it can be as simple as a one-paragraph document) before your first rental tax year to qualify.
Consider a cost segregation study for larger properties
If your rental property cost $500,000 or more, a cost segregation study in year one can dramatically front-load your depreciation deductions. The study reclassifies portions of the building — personal property components like carpeting, appliances, specialty plumbing, and electrical — into 5-year or 7-year MACRS property, and land improvements like parking lots and landscaping into 15-year property. These shorter-lived assets can be eligible for bonus depreciation, which means you might deduct a large chunk of the building's value in year one instead of over 27.5 or 39 years.
The time-value-of-money benefit is significant: deducting $100,000 now versus over 20 years is worth real dollars at any discount rate. The cost of a study ranges from a few thousand dollars for simple properties to $15,000+ for complex ones, and the first-year deduction benefit typically pays for itself many times over. Order the study before the end of your first tax year — it can be completed retroactively on a prior-year return using Form 3115, but year-one is the best time.
Set up your accounting from the start
From the day you receive your first rental payment, keep separate financial records for the rental property. A dedicated bank account for rent receipts and expense payments makes recordkeeping clean and defensible. Use accounting software (QuickBooks, Stessa, or similar) to track income and expenses by property.
Document every expense at the time it occurs: receipt, amount, vendor, date, and the rental property it relates to. For travel, keep a log of each trip with destination, business purpose, and mileage. For repairs, keep the contractor invoice and a description of what was repaired and why. The IRS's substantiation requirements are easiest to meet if you keep records contemporaneously rather than reconstructing them at tax time.
Understand the passive-loss rules from day one
Most rental activities are passive under Section 469. If your rental produces a net loss — common in early years due to depreciation and interest — understand from the beginning whether you can use that loss in the current year or whether it is suspended. If your MAGI is below $100,000 and you actively participate in the rental, you can deduct up to $25,000 against ordinary income. Above $150,000 MAGI, passive losses from rentals are fully suspended until you have passive income or sell the property.
Track your suspended passive losses on Form 8582 each year. These accumulate silently on your return, and when you eventually sell the property, they are released to offset the gain. A clear record from year one ensures you never lose the benefit of accumulated losses.
Start tracking your full basis history
Your tax basis in the property will change every year: improvements add to basis, depreciation reduces it. At sale — possibly decades from now — your gain equals the sale price minus your adjusted basis. An error in tracking basis that goes unnoticed for 15 years can mean overpaying thousands in taxes at sale. Start a basis log from the beginning: list the purchase price, all purchase-related costs added to basis, each capital improvement by date and amount, and each year's depreciation.
Keep this log alongside your tax returns, cost segregation reports (if any), and property records. When it is time to sell, you will have an audit-ready basis history that clearly shows your adjusted basis and the depreciation you claimed — the two numbers that determine your tax bill.
Elect the right depreciation methods
Year one is when you make several lasting depreciation elections. If you want to use the Alternative Depreciation System (ADS) instead of MACRS for certain property (useful if you have a foreign property or if you are subject to the GILTI or BEAT tax), the ADS election must generally be made on the original return. The Section 179 expensing election can be made for certain personal property (appliances, equipment) to deduct the full cost in year one. For a short-term rental, electing out of the uniform capitalization rules or making a grouping election for passive-activity purposes are both year-one decisions.
Consult with a CPA before your first-year return to ensure you are making elections that are optimal for your situation. Some elections are irrevocable; others can be changed, but changing them later involves complexity. Getting the elections right in year one is far simpler than amending returns or filing Forms 3115 to change methods retroactively.
Split your closing costs into three buckets
The settlement statement from your purchase contains costs that get three different tax treatments, and sorting them in year one prevents years of errors. Deduct currently: prepaid mortgage interest for the days between closing and month-end, real estate taxes allocable to your ownership period, and prepaid rental insurance as it is incurred. Add to basis (capitalize and depreciate with the building): title search and owner's title insurance, recording fees, transfer taxes, survey, abstract, and attorney fees tied to acquiring title. Amortize over the loan term: loan origination fees, points paid to get the mortgage, the lender's appraisal, and the lender's title insurance.
The bucket you drop each cost into changes when you get the deduction. A title fee added to basis is recovered over 27.5 years; a loan point is deducted ratably over the life of the loan (with the unamortized balance deductible if you refinance or sell early); a prorated property tax is deducted this year. Ask your closing agent for an itemized statement and code each line before you file the first return.
Start-up costs incurred before the rental exists
Costs you incur investigating or preparing a rental activity before it begins — market research, travel to scout properties, education about being a landlord — are start-up costs under IRC Section 195, not immediately deductible operating expenses. You may deduct up to $5,000 of start-up costs in the year the activity begins (reduced dollar-for-dollar once total start-up costs exceed $50,000) and amortize the rest over 180 months.
Distinguish start-up costs from two other categories: costs to acquire a specific property are capitalized into its basis, and fix-up costs incurred before the property is available to rent are generally capitalized as part of getting the property ready for service rather than deducted as current repairs. Getting these categories right in year one avoids deducting things the IRS would require you to capitalize.
A first-year worked example
You buy a residential rental for $300,000. The county assessor allocates 20% to land, so $60,000 is land and $240,000 is building. You capitalize $4,000 of title, recording, and transfer costs, allocated 80% to the building — adding $3,200 to your building basis for a depreciable basis of about $243,200. You make the property available to rent in June, so under the mid-month convention you get roughly 6.5 months of depreciation in year one.
First-year depreciation is about $243,200 ÷ 27.5 × (6.5 ÷ 12) ≈ $4,790 — the IRS MACRS table factor for a June placed-in-service month is 1.970%, which gives the same result. You also deduct your current-year mortgage interest, prorated property taxes, insurance, and any true repairs. Loan points are amortized over the mortgage term, not deducted in full. This first return locks in your basis, your land-building split, and your placed-in-service date for the entire hold.
Common first-year mistakes
The costliest year-one error is depreciating the whole purchase price without carving out non-depreciable land — this overstates deductions and invites an adjustment. Close behind: skipping the placed-in-service depreciation because you only owned the property part of the year, and deducting pre-rental fix-up as current repairs when it should be capitalized.
Two paperwork mistakes also cost money. The de minimis safe harbor requires a written accounting policy in place at the start of the year and an election statement attached to the return — miss either and you cannot expense the $2,500-per-item costs. And deducting loan points in full in year one, rather than amortizing them over the loan term, is a common overstatement the IRS can catch by matching the settlement statement.
Frequently asked questions
When does depreciation start for a rental property?
When the property is placed in service — available and ready for rent — not when you first collect rent or when you purchased it.
Can I deduct all my renovation costs in year one?
Only if they qualify as repairs (maintenance of existing condition) rather than improvements (betterment or restoration). Improvements must be capitalized and depreciated. The de minimis safe harbor allows expensing items up to $2,500 per invoice if you have a written accounting policy.
What is a cost segregation study and should I get one?
A cost segregation study reclassifies parts of the building into shorter-lived categories (5, 7, or 15 years) eligible for bonus depreciation, dramatically front-loading your first-year deductions. It is most beneficial for properties over $500,000 in value.
What is the $25,000 rental loss allowance?
Landlords who actively participate in managing their rental and have MAGI below $100,000 can deduct up to $25,000 of rental losses against ordinary income. The allowance phases out between $100,000 and $150,000.
How do I track basis for my rental property?
Maintain a running ledger starting with the purchase price, add the cost of all capital improvements, and subtract each year's depreciation. Keep this alongside your annual returns; you'll need it to compute your gain when you eventually sell.
How do I split closing costs on a rental for taxes?
Divide them into three buckets: currently deductible (prorated interest, property taxes, insurance), added to basis and depreciated (title, recording, transfer taxes, legal fees to acquire title), and amortized over the loan term (loan origination fees, points, lender's appraisal and title insurance).
Can I deduct expenses paid before the rental was available to rent?
Investigatory and pre-opening costs are start-up costs under Section 195 — up to $5,000 deductible in year one with the rest amortized over 180 months. Costs to acquire the property are added to basis, and pre-rental fix-up is generally capitalized rather than expensed.
Do I deduct mortgage points on a rental in the first year?
No. Points paid to obtain a mortgage on a rental are amortized over the life of the loan, not deducted in full in year one. If you refinance or sell and pay off the loan early, the remaining unamortized points are deductible at that time.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.