Opportunity Zones (opportunityzones.help)

• lookup_address — Geocodes a US street address (Census Bureau geocoder, falling back to OpenStreetMap; tract assignment by the FCC Census Block API) and returns its 2018 Opportun
• lookup_coordinates — Same as lookup_address for a latitude/longitude point.
• get_tract — Status for an 11-digit census tract GEOID. A 2010 GEOID is checked against the 2018 designations and a 2020 GEOID against the 2027 round; many GEOIDs exist in b
• get_state — Counts of 2018 zones, rural zones, 2027-eligible tracts and their nomination/certification status for one state or territory, with the official source.
• get_key_dates — The program calendar: OZ 1.0 inclusion date, OZ 2.0 start, designation periods, filing dates.
• calc_180_day_deadline — Last day to invest a gain in a QOF, with every start date the taxpayer may choose (direct, pass-through K-1, section 1231, RIC/REIT dividend, installment) and w
• calc_2026_inclusion — Amount of deferred gain included on Dec 31, 2026 for a pre-2027 QOF investment, with the 10%/15% basis step-up where the holding period was met, and an estimate
• calc_oz2_benefit — Models an OZ 2.0 investment (5-year deferral, 10% or rural 30% step-up, 10-year exclusion capped at year 30) against paying tax now and investing the remainder.
• compare_1031_qof_dst — Compares three uses of the same net sale proceeds over a holding period: pay the tax and reinvest, a 1031 exchange or DST rolling all proceeds, and an OZ 2.0 fu
• calc_substantial_improvement — How much must be added to a building's basis within 30 months (100%, or 50% in a zone made up entirely of rural areas).
• calc_90_percent_test — Averages the two semiannual testing dates and, if the fund falls short, computes the Form 8996 Part IV penalty month by month (pass month-end figures in monthly
• check_qozb — Checks the 70% tangible property, 50% gross income, 40% intangibles and 5% nonqualified financial property tests and the excluded-business list.
• plan_working_capital — Spend-by dates for each cash infusion under the 31-month working capital safe harbor, and the 62-month outer limit available to start-up businesses.
• get_financing_link — Link where a developer, sponsor or business owner can request debt financing for a project in an Opportunity Zone. Routed to Janover Capital LLC's desk; free, n

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