180-Day Investment Period
The window to reinvest a capital gain into a Qualified Opportunity Fund, generally starting on the sale date. Gains reported on a K-1 can use alternative start dates.
Nashional Investments · Updated October 2026
Educational definition only, not investment, tax or legal advice.
In practice
Opportunity Zone rules turn on timing: when the gain was realized, when it is reinvested, and how long the fund investment is held. Understanding 180-Day Investment Period matters because it can affect how much gain is deferred or excluded. The rules for investments made from January 1, 2027 differ from the original program, so we check which regime applies before recommending a Qualified Opportunity Fund.
Common questions.
What does the term 180-Day Investment Period mean?
Why does 180-Day Investment Period matter for investors?
See how this fits into a real plan on our Opportunity Zones page.
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