Clear Money Guide
What this guide covers
A quick view of the questions and evidence developed below.
Updated July 30, 2026. Quick answer (2026): A long-held family home often produces a gain in the $400,000-$600,000 range, and decades of capital improvements are usually what brings it back under the $500,000 joint exclusion. Federal tax is frequently zero; the 3.8% net investment income tax is the part downsizers miss.
You know what the house costs to sell. The proceeds are the harder question.
Downsizing usually converts an illiquid asset into a large cash balance in a single year. The matching service below introduces you to advisers who pay to meet you. Ask them what they would do with the net proceeds and in what order.
Before you start, what actually happens. The form is run by Kapitalwise, our advisor-matching partner. Kapitalwise sends your details to advisers who pay for the introduction, so expect calls and texts. Clear Money Guide is paid when you submit the form, whether or not you ever hire anyone. This is free to you and there is no obligation to hire anyone.
The Kapitalwise form opens here — you stay on this page.
What happens when you press the button
It asks about nine questions — age, investable assets, location — then your name, email and phone number, and verifies the phone by text. Nothing loads and nothing reaches Kapitalwise until you press the button.
The number that surprises people who bought a long time ago
Downsizing is the one home sale where the gain is usually large and the exclusion usually still covers it. A couple who bought in 1994 for $180,000 and sell at $760,000 with $46,000 of selling costs have a realized gain of about $534,000 before improvements. That is above the $500,000 joint cap — but decades of capital improvements are exactly what brings it back under, and most sellers have never added them up.
Improvements are the lever, and the records are the constraint
A new roof, an addition, a replaced HVAC system, new windows, a finished basement: these add to basis. Repainting and repairs do not. Thirty years of improvements on a family home routinely total six figures, and every dollar of it reduces the gain dollar for dollar. The practical problem is documentary, not legal — the seller who kept receipts pays less than the identical seller who did not.
Why downsizers should check the net investment income tax separately
A retiree with modest ordinary income can still be pushed over the 3.8 percent NIIT threshold by the sale itself, because taxable gain is net investment income. The thresholds are $250,000 on a joint return and $200,000 otherwise, written into Section 1411(b) as fixed figures with no indexing. A sale that produces $120,000 of taxable gain on top of $180,000 of other income crosses the joint threshold and picks up 3.8 percent on the part above it.
The move itself may change the tax
Downsizing usually means moving, and sometimes across a state line. Some states tax the gain the federal exclusion just removed. If the sale and the move are in the same year, the order of the two matters, and it is worth checking the destination state before signing.
Where downsizers actually land. An age-restricted community brings its own rulebook — what the HOA rules in a 55-plus community control, and whether to rent or buy inside one. If the home is manufactured, two things decide the economics: how far lot rent can be raised and whether the title has been eliminated so it counts as real property.
If the smaller house does not exist yet
Some downsizers are not buying a smaller house, they are building one, and the arithmetic starts earlier than the closing statement. A stock plan set is the first priced line, and it is much smaller than people expect. Truoba's three smallest plans, for example:
| Plan | Living area | Beds / baths | PDF plan set | PDF + CAD |
|---|---|---|---|---|
| Truoba Mini 615 | 880 sq ft | 2 bed / 1 bath | $800 | $1,300 |
| Truoba Mini 219 | 910 sq ft | 2 bed / 1 bath | $700 | $1,200 |
| Truoba Mini 419 | 1,200 sq ft | 2 bed / 2 bath | $1,200 | $1,700 |
Those are drawings only. The structural engineer's stamp most building departments require, the permit, the site work and the construction are all extra, and none of them is priced by the plan seller. What six Truoba plans really cost before the first nail takes one catalogue apart line by line, including what stays blank.
Related
Methodology
- Exclusion caps, the 2-of-5 test, the nonqualified-use allocation, the reduced-exclusion fraction and the depreciation carve-out are taken from the text of 26 U.S.C. 121. The 3.8 percent rate and its thresholds are from 26 U.S.C. 1411. Both were read on 2026-07-30.
- Section 121 caps and Section 1411 thresholds are written in the statute as fixed dollar amounts with no indexing mechanism, so they are built in. Long-term capital gain brackets ARE indexed annually, so your rate is an input rather than a lookup.
- Figures were computed by two independently written engines that agree to the cent, and the calculator on this page reproduces both exactly.
- Federal only. State treatment varies and some states do not follow the federal exclusion — what each state does with a long-term gain.
Educational estimate, not tax advice, and not a filed return. Federal only. Confirm anything that changes a filing decision with a CPA or tax attorney.
Editorial standards: Editorial Policy
Two questions this calculator gets asked constantly: is there an over-65 exemption? (no — the age break was repealed in 1997) and what if you sell before two years? (often a prorated exclusion that covers the whole gain).
If a reverse mortgage is part of the picture: whether a surviving spouse can stay in the house is decided at closing — a spouse not named in the loan documents at origination can never become eligible later, and the regulation says so in terms.