October is a good time to clean up your tax house.

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October is a good time to clean up your tax house.

William ThompsonBusiness Member
Accountant · Williamstown, NJ · Member since 2025 · 323 posts · 178 votes

Not the actual house.

😂


I mean your books.

If you own rentals, when was the last time you checked:

• Are repairs and improvements separated?
• Are all expenses tied to the right property?
• Are your closing statements recorded?
• Do you know your current basis?

These things are a lot easier to fix before tax season than after.

Be honest: How clean are your books right now? 1–1

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  • Simon W.Business Member
    Real Estate Consultant · Lehigh Valley PA & New York City · Member since 2013 · 1k+ posts · 662 votes
    6h

    Yeah, October is when the messy months show up. The four checks you listed are basically the difference between a clean file and a scavenger hunt.

    I'd start with repairs vs improvements, because that one rewrites basis if you get it wrong. Then make sure every expense has a property tag and the bank still ties for every month this year. Closing statements and loan costs should already be in the file — if they're not, pull them now while the title company still answers email.

    If those four are solid, tax season is a report pull. If not, you're rebuilding the year from memory in January.

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  • Chea Romine
    Member since 2026 · 19 posts · 3 votes
    1h

    Agree October is the cheap month to find the mess. January is when the same mess becomes expensive.

    What I add to the four checks you listed, for rental owners:

    - Repairs vs improvements with invoices in the property folder, not a junk email search in March. Wrong classification rewrites basis and depreciation.

    - Placed-in-service dates and land vs building splits for anything bought or refinanced this year.

    - 1099 / W-9 vendor file before year-end so you are not chasing TINs in January.

    - Re-run Q4 estimates off current-year P&L by property, not last year's voucher amount. Safe harbor is penalty protection, not proof the bill is right.

    A local chat tool can turn a bank CSV plus a pile of PDF invoices into a first-pass repair-vs-improvement list, but I would still match each large item to the actual invoice before the books close.

    If prior-year depreciation or a notice is already sideways while you clean 2026, genuitech Second Look is an option for a focused file review. Otherwise just finish the October checklist while title companies and banks still answer email.

    Not personalized tax advice. Just the Q4 pass I want done before Thanksgiving.

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  • Divin KanyamaBusiness Member
    Accountant · Seattle, WA · Member since 2025 · 311 posts · 98 votes
    1h

    @William Thompson ,The opening got me 😂—but the point is an important one. Clean books are not just about making tax season easier; they help owners understand how each property is actually performing.

    Repairs versus improvements and an inaccurate basis are especially easy to overlook, but they can affect both current deductions and the tax calculation when the property is sold. A quick review by property before year-end can prevent a much larger cleanup later. Plenty of investors probably think their books are a 9 until someone starts asking these questions.

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