lookup_address
Is this address in an Opportunity Zone?
Geocodes a US street address (Census Bureau geocoder, falling back to OpenStreetMap; tract assignment by the FCC Census Block API) and returns its 2018 Opportunity Zone status (2010 tract), its status for the 2027 designation round (2020 tract: eligible, nominated or certified, with source), the rural flags, and Census ACS tract statistics.
输入参数address必填
lookup_coordinates
Opportunity Zone status for a point
Same as lookup_address for a latitude/longitude point.
输入参数lat必填lon必填
get_tract
One census tract's Opportunity Zone record
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 both vintages. If you already geocoded a property, pass geoid_2010 and geoid_2020 instead of geoid.
输入参数geoidgeoid_2010geoid_2020
get_state
Opportunity Zones in a state
Counts of 2018 zones, rural zones, 2027-eligible tracts and their nomination/certification status for one state or territory, with the official source.
输入参数state必填
get_key_dates
Opportunity Zone key dates
The program calendar: OZ 1.0 inclusion date, OZ 2.0 start, designation periods, filing dates.
无需输入参数。
calc_180_day_deadline
180-day investment 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 whether the window reaches OZ 2.0 (Jan 1, 2027).
输入参数kindsale_date必填dividend_dateentity_year_endentity_return_due
calc_2026_inclusion
OZ 1.0 Dec 31, 2026 inclusion estimate
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 estimated tax at the user's rate.
输入参数rate_pctinvest_date必填deferred_gain必填fmv_12_31_2026
calc_oz2_benefit
OZ 2.0 benefit vs paying tax now
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.
输入参数gain必填ruralgrowth_pct必填hold_years必填invest_datediscount_pctrate_now_pct必填rate_later_pct
calc_substantial_improvement
Substantial improvement test
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).
输入参数ruralland_valuestart_datespent_so_farpurchase_price必填
calc_90_percent_test
QOF 90% asset 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 for an exact figure; otherwise testing-date figures are applied to each half-year and the result is flagged as an approximation) at an underpayment rate the caller supplies.
输入参数monthsd1_qozpd2_qozp必填monthlyd1_totald2_total必填single_dateunderpayment_rate_pct
check_qozb
Qualified Opportunity Zone Business tests
Checks the 70% tangible property, 50% gross income, 40% intangibles and 5% nonqualified financial property tests and the excluded-business list.
输入参数nqfptotal_basissin_businesstangible_qozbptangible_totalgross_income_zoneintangibles_totalgross_income_totalintangibles_used_in_zone
plan_working_capital
Working capital safe harbor timeline
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.
输入参数startupdisasterinfusions必填
get_financing_link
Get an Opportunity Zone financing quote
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, no obligation. Janover arranges loans; it does not sell fund interests.
无需输入参数。