• Summit Bookkeeping

Important October Deadlines

Updated: Oct 9


Welcome to the fourth and final quarter of 2020! Here are some deadlines you might want to mark on your calendar:

October 15

  • Tax extension deadline for individual (1040) and C Corp (1120) tax returns

October 25

  • Washington September B&O Tax Return for monthly filers (file online with MyDOR)


October 31

  • City of Bellingham B&O tax returns and payments for Q1, Q2, and Q3 for quarterly filers (COB) (Note: Q1 and Q2 deadlines were extended due to COVID-19)

  • City of Bellingham September B&O tax return for monthly filers (COB)

  • Washington Paid Family & Medical Leave Q3 report and payment (Paid Leave)

Since October 31 falls on a Saturday, the following taxes and reports are due by the next business day, which is Monday, November 2, 2020:

  • Labor & Industries quarterly report and payment for Q3 (L&I)

  • Washington Q3 B&O tax return for quarterly filers (file online with My DOR)

  • State Unemployment Insurance (SUI) for Q3 report and payment (ESD)

  • Form 941, the Employer's Quarterly Federal Tax Return for Q3 (IRS)

Please keep in mind that taxes and premiums differ from business to business, so check in with your bookkeeper or accountant to see if there are any additional taxes and forms due for you this month!

Summit Bookkeeping LLC

1530 Birchwood Ave Ste C

Bellingham, WA 98225

(360) 756-5020

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