The short answer
In a 1031 exchange, holding period means two different things: how long you held the property for investment, which supports the use test, and the clock that decides whether gain is long-term, which section 1223(1) carries over from the old property to the replacement. Section 1031 itself sets no minimum time for either property. The only statutory two-year period in section 1031 applies to exchanges with related persons.
At a glance
| Statutory minimum | None in section 1031 for the relinquished or replacement property |
|---|---|
| Tacking | The replacement's holding period starts on the day the old property's did |
| Related parties | Two years after the last transfer, or the deferral unwinds |
| Long-term gain | Property held more than one year |
The statute has no holding period; the two-year figure belongs to related-party exchanges
Section 1031(a)(1) asks whether property is held for productive use in a business or for investment, not for how long. Time held is evidence of investment intent, and a short hold invites the question of whether you held the property primarily for sale.
Section 1031(f) is the exception with a number. If you exchange with a related person and either of you disposes of the exchanged property before two years after the last transfer, the deferral is lost as of the date of that disposition. Section 1031(f)(2) excuses dispositions after a death, in an involuntary conversion, or where no principal purpose was tax avoidance, and section 1031(g) suspends the two-year clock while risk of loss is substantially diminished. The related-party two-year rule has the detail.
Rev. Proc. 2008-16 adds a 24-month figure only for dwelling units, as a safe harbor rather than a requirement.
Worked example: tacking turns a six-month hold into long-term gain
Hypothetical: you bought a rental in 2016, exchanged it for a replacement in March 2026, and sell the replacement in a taxable sale in September 2026. Measured from the replacement's closing you held it six months, but section 1223(1) includes the period you held the property exchanged, because the replacement's basis is determined by the old property's basis and the old property was section 1231 property.
IRS Publication 544 states the result plainly: the holding period of the new property begins on the same day as the holding period of the old property. The gain is long-term, measured from 2016. Whether a six-month hold also satisfies the use test is the separate intent question above. Run your own numbers with your CPA.
Where it bites: quick resales, related-party swaps and planning around tacking
Selling a replacement soon after closing may keep long-term treatment through tacking but can still undercut the claim that you acquired it to hold. Tacking also needs the old property to have been a capital asset or section 1231 property, which dealer inventory is not, and inventory cannot be exchanged under section 1031(a)(2) in any case.
Related-party timing traps are easy to trip. If you swap properties directly with your sibling, a related person under section 267(b), and your sibling sells the property you gave up a year later, your deferral unwinds in the year of that sale even though you did nothing, unless one of the section 1031(f)(2) exceptions applies.
Related-party exchanges must be reported on Form 8824 for the two years after the year of the exchange, as the Form 8824 instructions require. For practical guidance on timing, see how long to hold before a 1031 and how long to hold a replacement before selling.
Related questions
Is there a one-year or two-year rule for 1031 exchanges?
Not in general. Section 1031 has no minimum, and its only two-year period applies to exchanges with related persons under section 1031(f).
Does my holding period restart when I buy the replacement?
No. Under section 1223(1) the replacement's holding period includes the period you held the property you exchanged, so it starts on the old property's original date.
When does the holding period start for real estate?
Publication 544 says to count from the day after you received title or, if earlier, the day after you took possession and assumed the burdens and privileges of ownership.
Sources
Checked against these publications on September 30, 2026. Rules and figures change; confirm the current version with your CPA or attorney before you act. This page is general information, not tax or legal advice.