Resource
Tax Calendar
Track important tax and compliance deadlines. Note that certain company-specific deadlines, such as Statement of Information or Annual Report are not included and should be verified in the state account.
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Next up
Upcoming deadlines
The dates that matter next, across entity types. Updated automatically — only what's still ahead.
The year at a glance
Annual calendar
Federal and common startup deadlines for calendar-year filers. Dates shift to the next business day when they land on a weekend or holiday.
Founder notes
The ones founders miss
A few deadlines that aren't on a generic CPA calendar — and cost real money when they slip.
R&D payroll credit election
We make the election on your timely-filed return — that part's on us. Your job is small but easy to drop: forward Form 6765 to your payroll provider so the credit actually offsets payroll taxes. Skip it and the cash sits unused.
1099-NEC for contractors
The one that quietly slips. Any contractor or unincorporated vendor paid $600 or more during the year needs a 1099-NEC — filed with the IRS and sent to them by the end of January. Penalties stack per form, and the window is short.
Delaware franchise tax
The bill that surprises everyone. The default calculation can read in the tens of thousands; the assumed-par-value method usually cuts it to a fraction. Due March 1 for corporations.
Foreign-owned LLC reporting
A foreign-owned single-member LLC must file Form 5472 with a pro forma 1120 by April 15. It can't be e-filed the usual way — it follows special instructions (fax or mail). The penalty for missing it is $25,000 — per form.
California's $800 minimum and LLC fee
California charges an $800 annual minimum tax plus a gross-receipts-based LLC fee — owed even at a loss. The $800 is due with your Q1 payment by April 15; the estimated LLC fee (Form 3536) is a separate filing due June 15.
Estimated payments
Once you're profitable, the IRS wants tax four times a year — not just in April. Underpaying quietly racks up penalties that compound. We set the calendar before it's a problem.
Questions about an upcoming deadline? Talk to a partner.
Book an intro callThis calendar is a general guide to common federal and startup deadlines for calendar-year filers. It isn't tax advice, and it doesn't cover every state or situation — your specific dates may differ. Talk to us about what applies to your company.