Tax Year 2026 · Filed in 2027
State tax deadlines for CPA firms
Filing and estimated-payment deadlines for all 50 states plus DC — individual, corporate, pass-through, franchise, and sales tax. Federal-baseline dates for every state; verified state-specific data for the highest-impact 10. Updated whenever a state revenue department announces a calendar change.
Federal deadlines at a glance — tax year 2026
- Individual (Form 1040)
- April 15, 2027
- Individual extension
- October 15, 2027
- S-corp / partnership
- March 16, 2027
- C-corporation (calendar)
- April 15, 2027
Estimated payments due: Apr 15, 2026 · Jun 15, 2026 · Sep 15, 2026 · Jan 15, 2027
Verified state coverage
States with full state-revenue-department-confirmed deadlines — including franchise tax, PTET elections, and state-specific corporate filings.
Alabama Tax Deadlines
Alabama: Progressive individual income tax (2%/4%/5%) — top rate kicks in at $3,001 of taxable income (single).
View Alabama deadlinesAlaska Tax Deadlines
Alaska: No state individual income tax. Alaska imposes a corporate income tax (rates 0–9.4%) and a permanent fund dividend program for residents.
View Alaska deadlinesArizona Tax Deadlines
Arizona: Flat 2.5% individual income tax — one of the lowest state rates in the US (effective 2023 reduction from progressive structure).
View Arizona deadlinesArkansas Tax Deadlines
Arkansas: Progressive individual income tax with top rate of 4.4% (reduced from 4.7% in 2024) for income over $25,000.
View Arkansas deadlinesCalifornia Tax Deadlines
California individual income tax follows the federal April 15 deadline for tax year 2026 (filed in 2027).
View California deadlinesColorado Tax Deadlines
Colorado: Flat 4.40% individual income tax (reduced from 4.55% in 2023 under TABOR refund mechanism). May reduce further when state revenue exceeds TABOR cap.
View Colorado deadlinesConnecticut Tax Deadlines
Connecticut: Progressive individual income tax 2%-6.99% (top bracket at $500K single / $1M MFJ). CT has a high cost of living adjustment for itemizers.
View Connecticut deadlinesDelaware Tax Deadlines
Delaware: Progressive individual income tax 2.2%-6.6% (top bracket at $60,001+). Delaware has a UNIQUE April 30 individual filing deadline.
View Delaware deadlinesDistrict of Columbia Tax Deadlines
District of Columbia: Progressive individual income tax 4%-10.75% (top bracket at $1M+). DC has its own franchise/unincorporated business tax structure.
View District of Columbia deadlinesFlorida Tax Deadlines
Florida has no individual income tax — only federal Form 1040 applies to personal returns.
View Florida deadlinesGeorgia Tax Deadlines
Georgia adopted a flat 5.39% individual income tax rate for 2025-2026 (reduced from progressive structure).
View Georgia deadlinesHawaii Tax Deadlines
Hawaii: Progressive individual income tax 1.4%-11% — one of the highest top rates in the US. Unique April 20 filing deadline (not federal April 15).
View Hawaii deadlinesIdaho Tax Deadlines
Idaho: Flat 5.695% individual income tax (reduced from 5.8% in 2024 via HB 521 conformity reduction).
View Idaho deadlinesIllinois Tax Deadlines
Illinois individual income tax (Form IL-1040) conforms to the federal April 15 deadline.
View Illinois deadlinesIndiana Tax Deadlines
Indiana: Flat 3.0% individual income tax (reduced from 3.05% in 2025; continuing phased reduction to 2.9% by 2027). All 92 Indiana counties levy local income tax (range 0.5%-3.38%).
View Indiana deadlinesIowa Tax Deadlines
Iowa: Flat 3.8% individual income tax (effective 2025; reduced from progressive structure under 2022 reform). Iowa has UNIQUE May 1 filing deadline.
View Iowa deadlinesKansas Tax Deadlines
Kansas: Progressive individual income tax 3.1%/5.25%/5.7% (top bracket at $30K single / $60K MFJ).
View Kansas deadlinesKentucky Tax Deadlines
Kentucky: Flat 4.0% individual income tax (effective 2026; reduced from 4.5% in 2024 under HB 1 phase-down to 3.5% by 2027 subject to revenue triggers).
View Kentucky deadlinesLouisiana Tax Deadlines
Louisiana: Flat 3% individual income tax effective 2025 (reduced from progressive 1.85%-4.25% structure under 2024 reform). Louisiana has UNIQUE May 15 filing deadline.
View Louisiana deadlinesMaine Tax Deadlines
Maine: Progressive individual income tax 5.8%/6.75%/7.15% (top bracket at ~$62K single / ~$124K MFJ).
View Maine deadlinesMaryland Tax Deadlines
Maryland: Progressive individual income tax 2%-5.75% (top bracket at $250K+ single). Maryland has MANDATORY local (county) income tax piggyback.
View Maryland deadlinesMassachusetts Tax Deadlines
Massachusetts: Flat 5% individual income tax + 4% MILLIONAIRES TAX on income over $1M (effective 2023 via constitutional amendment). Capital gains taxed at 5% short-term / 8.5% long-term collectibles only.
View Massachusetts deadlinesMichigan Tax Deadlines
Michigan flat individual income tax rate is 4.25% (4.05% temporarily in 2024 then reverted).
View Michigan deadlinesMinnesota Tax Deadlines
Minnesota: Progressive individual income tax 5.35%/6.80%/7.85%/9.85% (top bracket at $193K single / $322K MFJ).
View Minnesota deadlinesMississippi Tax Deadlines
Mississippi: Flat 4.4% individual income tax (effective 2026; reduced from 5% in 2024 under HB 531 phase-down to 3.5% by 2030).
View Mississippi deadlinesMissouri Tax Deadlines
Missouri: Progressive individual income tax 0%-4.7% (top bracket at $8,968+, scheduled to reduce to 4.5% subject to revenue triggers). Kansas City + St. Louis levy local earnings tax (1%).
View Missouri deadlinesMontana Tax Deadlines
Montana: Two-bracket individual income tax 4.7% / 5.9% (top bracket effective 2024 reform — was previously progressive through 6.75%). No state sales tax.
View Montana deadlinesNebraska Tax Deadlines
Nebraska: Progressive individual income tax 2.46%/3.51%/5.01%/5.84% (top bracket at $35K single / $70K MFJ; phased reduction to flat 3.99% by 2027 under LB 754).
View Nebraska deadlinesNevada Tax Deadlines
Nevada: No state individual or corporate income tax. Nevada imposes Commerce Tax on businesses with $4M+ Nevada gross revenue, plus Modified Business Tax (payroll) on employers.
View Nevada deadlinesNew Hampshire Tax Deadlines
New Hampshire: No state wage income tax. Interest & Dividends Tax (Form DP-10) was 3% for 2025 — fully repealed effective tax year 2026 (no I&D tax going forward).
View New Hampshire deadlinesNew Jersey Tax Deadlines
New Jersey: Progressive individual income tax 1.4%-10.75% (top bracket at $1M+ — among the highest top rates nationally). NJ Property Tax Credit/Deduction available up to $15K.
View New Jersey deadlinesNew Mexico Tax Deadlines
New Mexico: Progressive individual income tax 1.7%-5.9% (top bracket at $210K single / $315K MFJ).
View New Mexico deadlinesNew York Tax Deadlines
New York individual income tax (Form IT-201) conforms to the federal April 15 deadline.
View New York deadlinesNorth Carolina Tax Deadlines
North Carolina adopted a flat 4.5% individual income tax for 2026 (continuing phased reduction from 4.75% in 2025).
View North Carolina deadlinesNorth Dakota Tax Deadlines
North Dakota: Three-bracket individual income tax 1.95%/2.5%/2.9% — among the lowest progressive top rates nationally. ND has no local income tax.
View North Dakota deadlinesOhio Tax Deadlines
Ohio individual income tax (Form IT-1040) conforms to the federal April 15 deadline.
View Ohio deadlinesOklahoma Tax Deadlines
Oklahoma: Progressive individual income tax 0.25%-4.75% (top bracket at $7,200 single / $12,200 MFJ).
View Oklahoma deadlinesOregon Tax Deadlines
Oregon: Progressive individual income tax 4.75%/6.75%/8.75%/9.9% (top bracket at $125K single / $250K MFJ). No state sales tax.
View Oregon deadlinesPennsylvania Tax Deadlines
Pennsylvania has a flat 3.07% individual income tax — among the lowest state rates in the US.
View Pennsylvania deadlinesRhode Island Tax Deadlines
Rhode Island: Progressive individual income tax 3.75%/4.75%/5.99% (top bracket at $176K single / $176K MFJ). Rhode Island has a flat sales tax of 7%.
View Rhode Island deadlinesSouth Carolina Tax Deadlines
South Carolina: Progressive individual income tax 0%-6.2% (top bracket at $17K+, reduced from 6.4% in 2025 under HB 4017 phased reduction to 6.0% by 2027).
View South Carolina deadlinesSouth Dakota Tax Deadlines
South Dakota: No state individual or corporate income tax — South Dakota is one of two US states with no income tax of any kind (along with Wyoming).
View South Dakota deadlinesTennessee Tax Deadlines
Tennessee: No state individual income tax (Hall Income Tax fully repealed 2021). Tennessee Franchise & Excise Tax (F&E) applies to most business entities.
View Tennessee deadlinesTexas Tax Deadlines
Texas has no individual or corporate income tax — only federal 1040 applies to personal returns.
View Texas deadlinesUtah Tax Deadlines
Utah: Flat 4.55% individual income tax (reduced from 4.65% in 2024 under HB 54 phase-down). Utah uses a single tax rate for all individuals regardless of income.
View Utah deadlinesVermont Tax Deadlines
Vermont: Progressive individual income tax 3.35%/6.6%/7.6%/8.75% (top bracket at $213K single / $260K MFJ).
View Vermont deadlinesVirginia Tax Deadlines
Virginia: Progressive individual income tax 2%/3%/5%/5.75% (top bracket at $17K single / $17K MFJ — same threshold for both). Virginia has UNIQUE May 1 filing deadline.
View Virginia deadlinesWashington Tax Deadlines
Washington: No state wage income tax. Washington imposes a Business & Occupation (B&O) tax on gross receipts (rates 0.13%-3.3% by activity), plus a 7% Capital Gains Tax on long-term gains over $250K (upheld 2023).
View Washington deadlinesWest Virginia Tax Deadlines
West Virginia: Progressive individual income tax 2.36%-5.12% (top bracket at $60K+; phased reduction continuing under HB 2024 to 4.92% by 2027 subject to revenue triggers).
View West Virginia deadlinesWisconsin Tax Deadlines
Wisconsin: Progressive individual income tax 3.50%/4.40%/5.30%/7.65% (top bracket at $304K single / $405K MFJ).
View Wisconsin deadlinesWyoming Tax Deadlines
Wyoming: No state individual or corporate income tax. Wyoming is one of two US states with no income tax of any kind (along with South Dakota). Revenue from severance taxes (mineral extraction) and sales tax.
View Wyoming deadlinesAll 50 states + DC
Every US state has its own page. States without income tax (TX, FL, NV, SD, WA, WY, AK, TN, NH) still have franchise / sales / payroll deadlines worth tracking.
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