Q3 Tax Deadlines You Can't Miss

Quarterly Estimated Tax Payments

If you're self-employed or have income not subject to withholding, quarterly estimated tax payments keep you from facing a massive bill at year-end. For Q3 2024, the deadline is September 16, and missing it triggers penalties even if you ultimately owe nothing.

1099 and Information Return Deadlines

If you've paid contractors or vendors over $600 during the quarter, start gathering those details now. Year-end deadlines for 1099-NEC and 1099-MISC filings come fast, and the IRS imposes steep penalties for late submissions — often $50+ per late or incorrect return.

State-Level Deadlines You Can't Ignore

Federal deadlines are just the beginning. Many states have their own estimated tax, sales tax, and payroll reporting schedules. Missing a state deadline can lock you out of doing business in that state or trigger audit flags.

Three Steps to Stay Ahead

1. Create a master calendar with your specific federal and state deadlines — spreadsheet, calendar app, or accounting software all work.
2. Set reminders 2–3 weeks before each deadline so you have time to gather documents and make adjustments.
3. Partner with a bookkeeper or accountant who tracks these dates for you. It's one less thing to worry about, and the confidence alone is worth it.

At Ledgerline, we keep our clients' tax calendars in sync with the IRS, state agencies, and local requirements — so you can focus on running your business instead of chasing deadline notifications.