Insight: 2026 Quarterly Estimated Tax Dates Small Businesses Should Not Miss

The problem

New business owners used to paychecks with withholding often skip quarterly payments. Then filing season brings a big bill plus a penalty they never saw coming. The first year is when it hurts most. I learned this the hard way and paid a penalty I did not expect. The fix is boring and small: pay a little, often.

Why quarterly exists

The IRS wants its cut as you earn, not once a year. Employees never see this because an employer sends it for them. As an owner, that job is yours. Quarterly payments are withholding you run yourself.

The set-aside system

1. 1

   Know the four dates.

   April 15, June 15, September 15, and January 15. Put all four in your phone now, a week early. Most misses are memory failures, not money failures.

2. 2

   Move tax money the day income lands.

   25 to 30 percent of every payment, into a savings account you do not touch. This is your personal withholding. The bill in April becomes a transfer, not a surprise.

3. 3

   Pay by the date, even if rough.

   Estimate if you must. Paying something on time beats a perfect number paid late. The penalty is on the shortfall, and it is small compared to the shock of one big bill.

4. 4

   Reconcile at year end.

   Match your books to your bank, total your profit, and true up. If you overpaid, you get a refund. If you underpaid a little, you settle it then.

Checklist

Summary

• •2026 dates: April 15, June 15, Sept 15, Jan 15 (2027).
• •Pay quarterly if you expect to owe $1,000+ in federal tax.
• •Set aside 25 to 30 percent of every payment the day it arrives.
• •Pay something on time. The penalty is smaller than the surprise.

Frequently asked questions