US property-tax due dates by state (2026-27): homeowner cash-flow calendar

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Agent-curated homeowner cash-flow intelligence: the 2026-cycle property-tax due dates for 50 US states plus DC (88 rows), joinable to shop orders, subscribers, or leads by ISO date and US state code. Each row is one installment due date with its schedule (annual/semiannual/quarterly/triannual), uniformity (statewide vs county/municipal-set), and a documented 0-100 cashflow_crunch_score combining payment lumpiness, Q4 holiday-season collision, and date uniformity. Provenance: agent-curated (intel-2 run 2026-10-02) from GOBankingRates' 50-state table (read in full 2026-10-02; 15 jurisdictions spot-verified against official sources with five date corrections: AR, CT, KY, MS, OR). Caveats: county_varies / municipal_varies dates are statewide-typical dates or window midpoints, not legal advice — exact dates live with county treasurers; New York has no row (no statewide dates); 2027 legislative changes are not reflected (annual snapshot, yearly cadence).

Source: GOBankingRates 50-state property-tax due-date table (National Property Tax Group / Ryan), verified against official sources
Rows: 88
Columns: 24
Source cadence: Yearly
Last refreshed: Oct 2, 2026
Theme: economy

Column	Type	Description
due_id	string	Deterministic primary key: <STATE>-<installment:02d> (e.g. CA-01, CA-02).
state_code	string	USPS 2-letter state/territory code (DC = District of Columbia). Join key with shipping/billing state.
state_name	string	State or district name.
country_code	string	ISO alpha-3 country code (always USA).
tax_year	integer	Property-tax assessment year (2026 cycle). (unit: year)
installment	integer	Which installment of the tax-year bill (1-based).
installments_per_year	integer	Total installments for the state in the cycle.
due_date	date	Due date (ISO date); see due_date_qualifier.
due_date_qualifier	string	exact (statutory/verified date), range_midpoint (midpoint of a county-set window), or typical (compilation-typical date for county/municipal-set states).
uniformity	string	statewide (one date for the whole state), county_varies, or municipal_varies.
schedule_label	string	annual, semiannual, quarterly, or triannual.
source_text	string	The compilation's 'Typical Due Dates' cell verbatim.
source_schedule_text	string	The compilation's 'Payment Schedule' cell verbatim.
verification_note	string	Corrections, reclassifications, and official sources; empty when the compilation row was kept as-is.
date_basis	string	compiled (from the table) or verified (official source).
due_month	integer	Month of due_date (1-12).
due_quarter	integer	Quarter of due_date (1-4).
is_q4_due	boolean	True when the due date falls in Oct/Nov/Dec (holiday-spending collision).
days_since_prev_installment	integer	Days since the state's previous installment due date; null for the first installment. (unit: days)
cashflow_crunch_score	integer	0-100 homeowner cash-flow crunch = round(100(0.50lumpiness + 0.30q4_timing + 0.20uniformity_w)); lumpiness 1.0 annual, 0.6 semiannual, 0.45 triannual, 0.35 quarterly; q4_timing 1.0 Oct-Dec, 0.7 Jan/Sep, 0.4 otherwise; uniformity_w 1.0 statewide else 0.7.
crunch_tier	integer	1-3 crunch tier: 3 (score>=75), 2 (>=50), 1.
source_url	string	The GOBankingRates 50-state table behind every row.
verified_at	string	Date the table was read and rows spot-verified (ISO date).
row_hash	string	Deterministic row key: first 16 hex chars of sha256 over the canonical row values.

First 10 sample rows — a preview, not the complete dataset.

due_id	state_code	state_name	country_code	tax_year	installment	installments_per_year	due_date	due_date_qualifier	uniformity	schedule_label	source_text	source_schedule_text	verification_note	date_basis	due_month	due_quarter	is_q4_due	days_since_prev_installment	cashflow_crunch_score	crunch_tier	source_url	verified_at	row_hash
IN-01	IN	Indiana	USA	2,026	1	2	2026-05-10	exact	statewide	semiannual	May 10 Nov. 10	Semiannual	—	compiled	5	2	false	—	62	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	861b986c3de6505d
MN-01	MN	Minnesota	USA	2,026	1	2	2026-05-15	exact	statewide	semiannual	May 15 Oct. 15	Semiannual	—	compiled	5	2	false	—	62	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	d8dfeb29dde5287f
IL-01	IL	Illinois	USA	2,026	1	2	2026-06-01	typical	county_varies	semiannual	June 1 Sept. 1	Semiannual	RECLASSIFIED to county_varies: table dates are downstate-typical. Cook County (largest) uses Mar 1 / Aug 1; counties set their own dates.	compiled	6	2	false	—	56	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	2af5091bff7ffafe
PA-01	PA	Pennsylvania	USA	2,026	1	1	2026-06-17	range_midpoint	municipal_varies	annual	February to October 2026 — varies by county/jurisdiction	Annual	Midpoint of the municipality-set discount/face/penalty window; each municipality sets its own dates.	compiled	6	2	false	—	76	3	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	ccfe04fa71bcfbe1
CT-01	CT	Connecticut	USA	2,026	1	2	2026-07-01	exact	statewide	semiannual	July 1 Oct. 1	Semiannual	CORRECTED: table's 'Oct. 1' second installment was wrong. CT towns bill Jul 1 + Jan 1, verified via Southington CT and Wilton CT tax collectors (2nd installment due Jan 1, 2027, grace to Feb 1).	verified	7	3	false	—	62	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	2f10bae01e4bbdbe
NH-01	NH	New Hampshire	USA	2,026	1	2	2026-07-01	exact	statewide	semiannual	July 1 Dec. 1	Quarterly, but you may choose semiannual if the amount is over $100	LABEL CORRECTED: table's confused label replaced. RSA 76:15-a: Jul 1 + Dec 1 semiannual is the default; quarterly is a municipal option.	compiled	7	3	false	—	62	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	6ba3b6365bb1207d
MA-01	MA	Massachusetts	USA	2,026	1	4	2026-08-01	exact	statewide	quarterly	Aug. 1, 2026 Nov. 1, 2026 Feb. 1, 2027 May 1, 2027	Quarterly	Municipal quarterly billing; dates uniform statewide.	compiled	8	3	false	—	50	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	e8a8dddbf7ee0a18
NJ-01	NJ	New Jersey	USA	2,026	1	4	2026-08-01	exact	statewide	quarterly	Feb. 1 May 1 Aug. 1 Nov. 1	Semiannual	LABEL CORRECTED: table said 'Semiannual' but listed four dates. NJ bills quarterly (Feb/May/Aug/Nov); ordered chronologically for the cycle.	compiled	8	3	false	—	50	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	91b9534ac6e62952
MI-01	MI	Michigan	USA	2,026	1	2	2026-08-15	range_midpoint	municipal_varies	semiannual	July to September 2026 — varies by county/jurisdiction December to March 2027 — varies by county/jurisdiction	Semiannual	Midpoints of the summer-bill (Jul-Sep 2026) and winter-bill (Dec 2026-Mar 2027) windows; local units set exact dates.	compiled	8	3	false	—	56	2	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	a408dd2c165f31bf
RI-01	RI	Rhode Island	USA	2,026	1	1	2026-08-15	range_midpoint	municipal_varies	annual	July-September 2026 — varies by county/jurisdiction	Annual	Midpoint of the municipality-set window.	compiled	8	3	false	—	76	3	https://www.gobankingrates.com/taxes/tax-laws/when-are-property-taxes-due-in-every-state/	2026-10-02	41011c8d893a1102

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/us_property_tax_due_intel/us_property_tax_due_calendar" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/us_property_tax_due_intel/us_property_tax_due_calendar").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/us_property_tax_due_intel/us_property_tax_due_calendar

Tip: fetch /llms.txt for the full machine-readable catalog.

Cite this snapshot

Pinned to snapshot 20261002T072239Z-f05e18a44d46 and its content hash, so readers get exactly the data you used.

APA

GOBankingRates 50-state property-tax due-date table (National Property Tax Group / Ryan), verified against official sources. (2026). US property-tax due dates by state (2026-27): homeowner cash-flow calendar [Data set, snapshot 20261002T072239Z-f05e18a44d46, sha256 f05e18a44d46]. Datazimuts. Retrieved 2026-10-02, from https://datazimuts.com/en/datasets/us_property_tax_due_intel/us_property_tax_due_calendar?snapshot=20261002T072239Z-f05e18a44d46

BibTeX

@misc{dz_us_property_tax_due_intel_us_property_ta_f05e18a4,
  title        = {{US property-tax due dates by state (2026-27): homeowner cash-flow calendar}},
  author       = {{GOBankingRates 50-state property-tax due-date table (National Property Tax Group / Ryan), verified against official sources}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/us_property_tax_due_intel/us_property_tax_due_calendar?snapshot=20261002T072239Z-f05e18a44d46}},
  note         = {Snapshot 20261002T072239Z-f05e18a44d46, sha256 f05e18a44d4683a34a8ca15d4f97e57c61511240ea09d5c44feaa1bf786637f4; accessed 2026-10-02}
}

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US property-tax due dates by state (2026-27): homeowner cash-flow calendar

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