{
 "tax_year": 2026,
 "generated": "2026-10-17",
 "states": [
  {
   "code": "AL",
   "name": "Alabama",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.revenue.alabama.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "AK",
   "name": "Alaska",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.alaska.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "AZ",
   "name": "Arizona",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form 140ES",
   "note": "Separate 140ES for each quarter; weekend/holiday moves to next business day.",
   "source_url": "https://azdor.gov/individuals/individual-estimated-tax-payments",
   "extra_url": "https://azdor.gov/sites/default/files/document/FORMS_INDIVIDUAL_2026_140iES.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "AR",
   "name": "Arkansas",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.dfa.arkansas.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "CA",
   "name": "California",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form 540-ES",
   "note": "Installments are NOT equal: 30% / 40% / 0% / 30% of the required annual payment (nothing due Sep 15, 2026).",
   "source_url": "https://www.ftb.ca.gov/pay/estimated-tax-payments.html",
   "extra_url": "https://www.ftb.ca.gov/forms/2026/2026-540-es-instructions.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "CO",
   "name": "Colorado",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form DR 0104EP",
   "note": "Weekend/legal holiday moves to next business day.",
   "source_url": "https://tax.colorado.gov/individual-income-tax-estimated-payments",
   "extra_url": "https://tax.colorado.gov/DR0104EP",
   "last_verified": "2026-10-17"
  },
  {
   "code": "CT",
   "name": "Connecticut",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://portal.ct.gov/drs",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "DE",
   "name": "Delaware",
   "status": "verified",
   "dates": [
    "Apr 30, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form PIT-EST",
   "note": "First installment is April 30, not April 15. Estimates generally required if expected Delaware tax after withholding and credits exceeds $800.",
   "source_url": "https://revenue.delaware.gov/frequently-asked-questions/personal-income-tax-faqs/",
   "extra_url": "https://revenuefiles.delaware.gov/2025/PITForms_Instructions/Instructions/PIT-EST_Instructions_2026-01.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "DC",
   "name": "District of Columbia",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://otr.cfo.dc.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "FL",
   "name": "Florida",
   "status": "no_income_tax",
   "dates": [],
   "form": "",
   "note": "Florida Department of Revenue states Florida does not impose a personal income tax.",
   "source_url": "https://floridarevenue.com/faq/Pages/FAQDetails.aspx?FAQID=1466",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "GA",
   "name": "Georgia",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form 500-ES",
   "note": "Weekend/holiday moves to next business day. May pay full amount with first installment.",
   "source_url": "https://dor.georgia.gov/500-es-individual-and-fiduciary-estimated-tax-payment-voucher",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "HI",
   "name": "Hawaii",
   "status": "verified",
   "dates": [
    "Apr 20, 2026",
    "Jun 20, 2026",
    "Sep 20, 2026",
    "Jan 20, 2027"
   ],
   "form": "Form N-200V (payment voucher)",
   "note": "Hawaii uses the 20th of the month. The Department's estimated-tax explainer is Tax Facts 2019-3.",
   "source_url": "https://files.hawaii.gov/tax/legal/taxfacts/tf2019-3.pdf",
   "extra_url": "https://files.hawaii.gov/tax/forms/current/n200v_i.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "ID",
   "name": "Idaho",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.idaho.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "IL",
   "name": "Illinois",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form IL-1040-ES",
   "note": "May pay in full by Apr 15 or in four installments; see Illinois Pub-105.",
   "source_url": "https://tax.illinois.gov/content/dam/soi/en/web/tax/forms/incometax/documents/currentyear/individual/il-1040-es.pdf",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "IN",
   "name": "Indiana",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.in.gov/dor/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "IA",
   "name": "Iowa",
   "status": "verified",
   "dates": [
    "Apr 30, 2026",
    "Jun 30, 2026",
    "Sep 30, 2026",
    "Jan 31, 2027"
   ],
   "form": "Form IA 1040ES",
   "note": "Iowa uses month-end dates. Threshold is $1,000 of tax on non-withheld income for tax years beginning on/after Jan 1, 2026 (was $200). Jan 31, 2027 is a Sunday, so the next business day applies.",
   "source_url": "https://revenue.iowa.gov/taxes/tax-guidance/individual-income-tax/estimated-income-tax-payments",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "KS",
   "name": "Kansas",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.ksrevenue.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "KY",
   "name": "Kentucky",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://revenue.ky.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "LA",
   "name": "Louisiana",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://revenue.louisiana.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "ME",
   "name": "Maine",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.maine.gov/revenue/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "MD",
   "name": "Maryland",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form PV",
   "note": "At least one-fourth due by Apr 15; weekend/holiday moves to next business day.",
   "source_url": "https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/forms/worksheets/2026-pv-worksheet.pdf",
   "extra_url": "https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/forms/2026/pv.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "MA",
   "name": "Massachusetts",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 16, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form 1-ES / MassTaxConnect",
   "note": "Estimates required if expected tax due on non-withheld income is more than $400. Mass.gov lists the 2nd 2026 installment as June 16.",
   "source_url": "https://www.mass.gov/info-details/massachusetts-dor-personal-income-and-fiduciary-estimated-tax-payments",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "MI",
   "name": "Michigan",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form MI-1040ES",
   "note": "May pay the full year's estimate with the first payment.",
   "source_url": "https://www.michigan.gov/taxes/questions/iit/accordion/estimate/when-are-the-quarterly-estimated-tax-payments-due-1",
   "extra_url": "https://www.michigan.gov/taxes/iit/iitpayments",
   "last_verified": "2026-10-17"
  },
  {
   "code": "MN",
   "name": "Minnesota",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Individual estimated tax payment voucher",
   "note": "May make one full-year payment by Apr 15.",
   "source_url": "https://www.revenue.state.mn.us/estimated-tax",
   "extra_url": "https://www.revenue.state.mn.us/tax-due-dates",
   "last_verified": "2026-10-17"
  },
  {
   "code": "MS",
   "name": "Mississippi",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.dor.ms.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "MO",
   "name": "Missouri",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://dor.mo.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "MT",
   "name": "Montana",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://mtrevenue.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "NE",
   "name": "Nebraska",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://revenue.nebraska.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "NV",
   "name": "Nevada",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.nv.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "NH",
   "name": "New Hampshire",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.revenue.nh.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "NJ",
   "name": "New Jersey",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form NJ-1040-ES",
   "note": "Required if you expect to owe more than $400 of NJ tax after withholding and credits; no filing requirement if gross income is $10,000 or less (single/MFS) or $20,000 or less (joint/HoH/surviving spouse).",
   "source_url": "https://www.nj.gov/treasury/taxation/njit20.shtml",
   "extra_url": "https://www.nj.gov/treasury/taxation/pdf/current/1040esi.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "NM",
   "name": "New Mexico",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.tax.newmexico.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "NY",
   "name": "New York",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form IT-2105",
   "note": "May pay the full estimated tax with the first payment. IT-2105 also covers NYC, Yonkers and MCTMT.",
   "source_url": "https://www.tax.ny.gov/pit/estimated_tax/estimated_tax_payment_due_dates.htm",
   "extra_url": "https://www.tax.ny.gov/pdf/current_forms/it/it2105i.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "NC",
   "name": "North Carolina",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form NC-40",
   "note": "Generally owe if expected NC tax after withholding and credits is $1,000 or more. Jan 15, 2027 payment not required if you file Form D-400 and pay the balance by Jan 31, 2027.",
   "source_url": "https://www.ncdor.gov/taxes-forms/individual-income-tax/estimated-income-tax",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "ND",
   "name": "North Dakota",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.tax.nd.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "OH",
   "name": "Ohio",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form IT 1040ES",
   "note": "Generally needed only if estimated Ohio tax after withholding exceeds $500. If a due date falls on a weekend it moves to the following Monday.",
   "source_url": "https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2026/ites-instructions-fi.pdf",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "OK",
   "name": "Oklahoma",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://oklahoma.gov/tax.html",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "OR",
   "name": "Oregon",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.oregon.gov/dor",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "PA",
   "name": "Pennsylvania",
   "status": "verified",
   "dates": [
    "Apr 15, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form PA-40 ES (I)",
   "note": "2026: required if you expect at least $14,000 of PA taxable income not subject to withholding. If first met after Apr 1, installment percentages differ (see REV-413).",
   "source_url": "https://www.pa.gov/agencies/revenue/forms-and-publications/pa-personal-income-tax-guide/income-subject-withholding-estimated-payments-penalties-interest-other-additions",
   "extra_url": "https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/formsforindividuals/pit/documents/2026/2026_rev-413i.pdf",
   "last_verified": "2026-10-17"
  },
  {
   "code": "RI",
   "name": "Rhode Island",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.ri.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "SC",
   "name": "South Carolina",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://dor.sc.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "SD",
   "name": "South Dakota",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://dor.sd.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "TN",
   "name": "Tennessee",
   "status": "no_income_tax",
   "dates": [],
   "form": "",
   "note": "Tennessee has no personal income tax on earned income; the Hall income tax on interest/dividends was repealed for tax years beginning Jan 1, 2021.",
   "source_url": "https://www.tn.gov/revenue/taxes/hall-income-tax.html",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "TX",
   "name": "Texas",
   "status": "no_income_tax",
   "dates": [],
   "form": "",
   "note": "Texas does not impose a personal income tax (Texas Comptroller's tax list has none; the state constitution prohibits one). Franchise and sales taxes may still apply to businesses.",
   "source_url": "https://comptroller.texas.gov/taxes/",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "UT",
   "name": "Utah",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.utah.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "VT",
   "name": "Vermont",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.vermont.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "VA",
   "name": "Virginia",
   "status": "verified",
   "dates": [
    "May 1, 2026",
    "Jun 15, 2026",
    "Sep 15, 2026",
    "Jan 15, 2027"
   ],
   "form": "Form 760ES",
   "note": "First installment is May 1, not April 15. Electronic payment required once any installment exceeds $1,500 or annual liability exceeds $6,000.",
   "source_url": "https://www.tax.virginia.gov/individual-estimated-tax-payments",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "WA",
   "name": "Washington",
   "status": "no_income_tax",
   "dates": [],
   "form": "",
   "note": "No individual income tax at present (a 9.9% tax on income over $1 million starts Jan 1, 2028 per WA DOR). Self-employed people may owe B&O tax on gross receipts (service rate 1.5%); registration is required at $12,000+ of annual gross income per WA DOR search results; check dor.wa.gov.",
   "source_url": "https://dor.wa.gov/taxes-rates/income-tax",
   "extra_url": "",
   "last_verified": "2026-10-17"
  },
  {
   "code": "WV",
   "name": "West Virginia",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://tax.wv.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "WI",
   "name": "Wisconsin",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://www.revenue.wi.gov/",
   "extra_url": "",
   "last_verified": ""
  },
  {
   "code": "WY",
   "name": "Wyoming",
   "status": "not_checked",
   "dates": [],
   "form": "",
   "note": "Not yet checked by this site. Use your state tax agency's page for due dates, forms and thresholds.",
   "source_url": "https://revenue.wyo.gov/",
   "extra_url": "",
   "last_verified": ""
  }
 ]
}