Business Tax Deadlines

State filing information

Pennsylvania

Business tax filing in Pennsylvania: state returns, sales tax, other business taxes, and the federal dates that apply everywhere.

checked 2026-09-01Verified against Pennsylvania Department of Revenue. 18 sources.

Corporate income tax return

May 15
Corporate Net Income Tax (CNIT)

Partnership / S corporation returns

April 15
Partnerships April 15; Same for S corporations

Sales tax return

20th of the following month
sales, use and hotel occupancy tax · Assigned by the Department based on actual tax liability: monthly if liability is greater than $600 per quarter but less than $25,000; quarterly if...

Other business taxes

2 taxes
Capital Stock / Foreign Franchise Tax (REPEALED); Gross Receipts Tax (utilities / transportation) and other specialty corporation taxes (Bank Shares Tax, Mutual Thrift, Insurance Premiums, PURTA)

Pennsylvania Department of Revenue

Other business taxes

TaxWho owes itDue
Capital Stock / Foreign Franchise Tax (REPEALED)Formerly all corporations and LLCs; 'The Capital Stock/Foreign Franchise tax has been eliminated for tax years beginning January 1, 2016 and after.'
Gross Receipts Tax (utilities / transportation) and other specialty corporation taxes (Bank Shares Tax, Mutual Thrift, Insurance Premiums, PURTA)Industry-specific: public utilities, telecommunications and transportation companies (gross receipts); banks (shares tax); insurers (premiums); utility realty owners...Utilities Gross Receipts Tax Annual Report and Bank Shares Tax Annual Report listed at March 16, 2026...

Rules in full

Corporate income tax

Corporate Net Income Tax (CNIT). The RCT-101, PA Corporate Net Income Tax Report, is due on or before the 15th day of the month following the due date of the federal return, for both calendar- and fiscal-year filers (i.e., 30 days after the federal due date). Rate phase-down: 8.99% (2023), 8.49% (2024), 7.99% (2025), 7.49% (2026), 6.99% (2027), 6.49% (2028), 5.99% (2029), 5.49% (2030), 4.99% (2031 and after). Quarterly estimated CNIT payments due the 15th day of the 3rd, 6th, 9th and 12th months (Mar 16, Jun 15, Sep 15, Dec 15 in 2026 for calendar-year filers).

Extension. A corporation granted a federal extension is automatically granted an extension to file RCT-101...

Partnerships and S corporations

No entity-level income tax on partnerships or PA S corporations generally: owners include their shares on their PA personal income tax returns (3.07%). PA S corporations are subject to CNIT only to the extent of built-in gains; REV-976 allows an election NOT to be taxed as a PA S corporation. Partnerships/LLCs with nonresident individual, estate or trust owners must withhold and pay PA personal income tax on the owners' expected share of PA-source income (quarterly installments; final payment due with the PA-20S/PA-65). PA-65 Corp (Directory of Corporate Partners) is due the same date and has no extension. Pennsylvania had NOT enacted an elective pass-through entity (SALT-cap workaround) tax as of a January 14, 2025 Senate co-sponsorship memo proposing one.

Sales, use and hotel occupancy tax

Due date. Returns and payments are due the 20th day of the month following the end of the reporting period (monthly: 20th of the following month; quarterly: 20th of the month after quarter end; semi-annual: August 20 for January-June and February 20 for July-December). If the 20th falls on a weekend or holiday, due the next business day.

Filing frequency. Assigned by the Department based on actual tax liability: monthly if liability is greater than $600 per quarter but less than $25,000; quarterly if less than $600 per quarter but greater than $300 annually; semi-annual if $300 or less annually; monthly with prepayment (AST) if third-quarter prior-year liability is $25,000 or more. (REV-717 rev. 02-26 wording.)

Thresholds. Monthly: > $600/quarter and < $25,000; Quarterly: < $600/quarter and > $300/year; Semi-annual: <= $300/year; AST Level 1: $25,000 to < $100,000 for the 3rd calendar quarter of the preceding year; AST Level 2: $100,000 or more for that quarter. Electronic payment required at the $1,000 payment threshold.

Prepayments. Accelerated Sales Tax (AST): licensees whose actual liability for the third calendar quarter of the preceding year was $25,000 or more must remit a prepayment by the 20th of the CURRENT month, separate from the prior month's return/payment due the 20th of the following month. AST Level 1 ($25,000 to < $100,000): 50% of the tax liability for the same month of the preceding year OR at least 50% of the actual liability for the current month. AST Level 2 ($100,000 or more): 50% of the tax liability for the same month of the preceding year (no alternative).

Notes

CNIT rate is 7.49% for tax years beginning in 2026 (7.99% in 2025), continuing to 4.99% in 2031. NOL deduction cap rises from 40% (2024-2025) to 50% (2026) and up to 80% by 2029; Act 45 of November 2025 decoupled PA from several federal OBBBA provisions. The annual report is a Department of State filing, not a Department of Revenue filing, and was not researched.

What we could not confirm. Secondary sources disagree sharply on the calendar-year RCT-101 date (cleertax.com and instead.com say April 15; upcounsel.com says April 30); two official sources (REV-1200 instructions and the 2026 DPO-05 reference guide) say the 15th of the month after the federal due date = May 15, which was used. Sales-tax frequency thresholds: REV-717 (rev. 02-26) states quarterly = < $600/quarter and > $300 annually and semi-annual = $300 or less annually, whereas many secondary sources (and the fetch summary of the DOR knowledge-base article) cite an older $75-per-third-quarter semi-annual boundary; the DOR knowledge-base page itself returned HTTP 403 so the official REV-717 wording was used. The absence of a PA pass-through entity elective tax was confirmed only via a January 2025 legislative memo; later 2025-2026 enactment could not be ruled out (a 2026 law-firm summary page returned 404). Gross receipts/bank shares 'who owes' descriptions come from the DOR corporation-taxes landing page list, not a detailed rule page. Web search budget was exhausted before a Wolters Kluwer/Bloomberg-class corroboration could be fetched for the CNIT due date.

Federal dates that apply in Pennsylvania

  1. SEP15Tue
    Individuals & Sole Proprietors
    Q3 2026 estimated tax payment (Form 1040-ES)
  2. SEP15Tue
    Partnerships
    Form 1065 extended return (Form 7004), tax year 2025
  3. SEP15Tue
    S-Corporations
    Form 1120-S extended return (Form 7004), tax year 2025
  4. SEP15Tue
    C-Corporations
    Q3 2026 corporate estimated tax (Form 1120-W)
  5. OCT15Thu
    Individuals & Sole Proprietors
    Form 1040 extended return (Form 4868), tax year 2025
  6. OCT15Thu
    C-Corporations
    Form 1120 extended return (Form 7004), tax year 2025

All 2026 federal deadlines

Sources

  1. https://www.pa.gov/en/agencies/revenue.html official
  2. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/corporation-taxes/corporate-net-income-tax.html official
  3. https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/formsforbusinesses/corporationtax/documents/2024/2024_rev-1200.pdf official
  4. https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/otherforms/documents/dpo-05.pdf official
  5. https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/formsforbusinesses/partnerships-s-corps-llcs/documents/2024/2024_pa-20s-pa-65.pdf official
  6. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/partnerships-s-corporations-llcs/pa-65-corp--directory-of-corporate-partners---notice-of-obligati official
  7. https://www.pa.gov/agencies/revenue/forms-and-publications/pa-personal-income-tax-guide/pass-through-entities official
  8. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/partnerships-s-corporations-llcs.html official
  9. https://www.palegis.us/senate/co-sponsorship/memo?memoID=44987 official
  10. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/sales-use-and-hotel-occupancy-tax.html official
  11. https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/formsforbusinesses/sut/documents/rev-717.pdf official
  12. https://www.pa.gov/content/dam/copapwp-pagov/en/revenue/documents/formsandpublications/formsforbusinesses/sut/documents/2026_rev-819.pdf official
  13. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/sales-use-and-hotel-occupancy-tax/accelerated-sales-tax-ast-prepayments official
  14. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/corporation-taxes/capital-stock-and-foreign-franchise-taxes official
  15. https://www.pa.gov/agencies/revenue/resources/tax-types-and-information/corporation-taxes official
  16. https://hbkcpa.com/insights/pennsylvania-c-corporation-tax-changes-2025/
  17. https://www.taxjar.com/sales-tax/pennsylvania
  18. https://legalclarity.org/when-is-pa-sales-tax-due-due-dates-by-filing-frequency/

Checked 2026-09-01; researcher confidence 0.85. Corrections with a link to the state's own page: contact@businesstaxdeadlines.com.