Taxes & Entities

The Business Tax Calendar

Business taxes aren't one date in April — they're a year-round rhythm of deadlines: quarterly estimated payments, payroll deposits and filings, information returns in January, entity returns in March and April, and sales-tax cycles on the side. The deeper lesson: most tax penalties aren't for owing money — they're for missing dates — and the whole rhythm can be built into a calendar once and then simply obeyed.

  • Intermediate
  • 8 min total
  • 11 chapters

What decision this helps you make: Which tax deadlines apply to your business across the year — and how to turn them into one calendar you build once and follow, instead of surprises that arrive as penalties.

What this topic is

The year-round deadline rhythm of business taxation: quarterly estimated payments (April, June, September, January), payroll deposit schedules with quarterly and annual returns, W-2s and 1099-NECs due in January, entity income-tax returns in March (pass-throughs) and April (C corps and individuals), and state sales-tax cycles.

Why it matters

A large share of small-business tax pain is timing, not amount: late-filing and late-payment penalties accrue even when the underlying tax is small — and some information-return penalties apply per form. One afternoon building the calendar converts a year of surprises into routine.

Who should learn it

Every owner — especially anyone who thinks of taxes as "an April problem."

What you will understand

  • Business taxes run on a year-round rhythm, not one April date
  • Penalties mostly punish missed DATES, not just underpaid amounts
  • The rhythm: quarterlies, payroll cadence, January information returns, spring entity returns, sales-tax cycles
  • Build the calendar once from primary sources, then obey it

Prerequisites

Common misconception

"Taxes are an April thing — I'll deal with them at filing time." April is one date on a year-round calendar. Estimated taxes come due four times a year (April, June, September, January). Payroll taxes deposit on their own schedule with quarterly returns. W-2s and 1099-NECs are due to workers and the IRS by January 31. Pass-through entity returns are due in March, a month before personal returns. Sales tax runs on its own state cycle. Miss any of these and penalties accrue — even when the tax itself was tiny.