Most homeowners start tracking costs after they settle in. The closing disclosure alone can add thousands to your basis — if you know what to look for.
There is a common and expensive misconception about tax basis: that it equals what you paid for the house. It starts there, but the closing disclosure — that thick packet of papers you signed on the day you got the keys — contains line items that can add thousands of dollars to your basis before you spend a single dollar on improvements.
Most people file the disclosure in a drawer and forget about it. That drawer contains money.
What the closing disclosure adds to basis
The purchase price is your starting point. But certain settlement charges are treated as part of the cost of acquiring the property, which means they add to your basis just like capital improvements do. These include:
- Abstract and recording fees
- Legal fees associated with the purchase
- Owner's title insurance premiums
- Transfer taxes paid by the buyer
- Survey fees
- Charges for installing utility services for the first time
- Amounts the seller owed that you agreed to pay (back taxes, liens)
What does not add to basis
Not every closing cost qualifies. These are excluded from basis:
- Mortgage origination fees and points (deductible as interest, not basis)
- Homeowner's insurance premiums
- Prepaid interest
- Escrow account deposits
- Appraisal fees (buyer-paid)
- Inspection fees
The line is not always obvious, and the IRS occasionally revisits individual items. When in doubt, your closing attorney or settlement agent can clarify which category a specific charge falls into.
Pre-purchase costs that also qualify
If you paid for a survey, a title search, or legal work before closing that was directly related to the acquisition, those costs can also be added to basis. Keep the receipts. They belong in the same record as your closing disclosure.
Why this matters more than you think
On a $450,000 purchase, qualifying closing costs often run $5,000–$10,000. Add those to your basis before you log a single improvement, and you've reduced your eventual taxable gain by that amount. On a home held for 20 years with significant appreciation, that can translate to $1,000–$2,500 in avoided capital gains tax — from one document you already have.
Retrieve your closing disclosure today. Add the qualifying line items as your first expense entries. Mark them as basis-adding. Everything else builds from there.
