Opportunity Zone (QOZ) Tax Deferral Calculator 2026
Qualified Opportunity Zones defer capital gains tax until Dec 31, 2026 AND allow 10-year tax-free appreciation on QOZ investment. Calculate combined tax savings vs traditional taxable investment.
| Capital gain to invest | — |
| Tax owed Dec 31, 2026 (deferred) | — |
| QOZ growth over hold period | — |
| QOZ value at exit | — |
| Tax on QOZ appreciation (10+ year hold = 0) | — |
| Net QOZ wealth after all taxes | — |
| Net wealth if invested taxable (alternative) | — |
| Advantage of choosing QOZ | — |
Qualified Opportunity Zones (QOZs), created under TCJA Section 1400Z-2, offer two layered tax benefits: (1) Defer capital gains tax on the original gain until Dec 31, 2026 (paid with 2026 return). (2) 10-year hold of QOZ investment = 0% federal tax on appreciation of that investment. Combined effect can boost net after-tax wealth 20-40% vs taxable alternative — but only if the underlying QOZ deal performs.
How the Two Benefits Stack
Benefit 1 — Deferral: $500K capital gain × 28.8% (federal 20% + 8.8% NIIT/state) = $144K tax. Instead of paying now, defer until Dec 31, 2026 (paid April 2027). Cash works for you in QOF during deferral period. Benefit 2 — Step-up on QOZ appreciation: hold QOF investment 10+ years and ALL appreciation on the QOZ investment is 0% federal tax. Note: the ORIGINAL deferred gain still owes tax in 2026 — only the NEW QOZ growth is tax-free.
QOZ Rules and Pitfalls
(1) 180-day window: must invest in QOF within 180 days of gain realization. (2) Qualified Opportunity Fund only: cannot buy property directly — must invest through QOF that holds 90%+ in QOZ assets. (3) Substantial improvement: existing buildings must double basis within 30 months. (4) State tax: most states conform to federal QOZ benefits, but CA, NC, MS, MA do not — verify state-level. (5) 2027 risk: many QOZ deals projected to over-promise. Choose sponsor + asset class first, tax benefit second.
Last updated May 2026. Sources: IRS Opportunity Zones FAQ.