Don't Get Caught Off Guard: Understanding Estimated Taxes and Key Deadlines

For many small business owners, receiving a large tax bill at the end of the year can be both frustrating and stressful. One of the most common reasons this happens is failing to make estimated tax payments throughout the year.

If you're self-employed, own an S-Corporation, operate an LLC, or receive income that isn't subject to regular payroll withholding, understanding estimated taxes is essential to avoiding penalties and keeping your cash flow on track.

What Are Estimated Taxes?

Estimated taxes are periodic payments made to the IRS and, in many cases, New York State to cover income taxes that are not withheld from a paycheck.

Estimated tax payments typically apply to:

• Self-employed individuals

• Sole proprietors

• Partners in partnerships

• S-Corporation shareholders

• LLC members

• Individuals with significant investment income

• Rental property owners

Rather than waiting until tax season to pay the entire balance due, the government requires taxes to be paid throughout the year as income is earned.

Why Are Estimated Taxes Important?

Many business owners assume they can simply pay their taxes when they file their return. Unfortunately, the IRS and New York State may assess penalties and interest if enough tax was not paid throughout the year.

Benefits of making estimated payments include:

✅ Avoiding underpayment penalties

✅ Reducing tax-time surprises

✅ Improving cash flow planning

✅ Keeping tax obligations manageable throughout the year

Federal Estimated Tax Deadlines

Estimated taxes are generally paid four times per year.

2026 Federal Estimated Tax Due Dates

Payment	Covers Income Earned	Due Date
1st Quarter	January 1 – March 31	April 15, 2026
2nd Quarter	April 1 – May 31	June 15, 2026
3rd Quarter	June 1 – August 31	September 15, 2026
4th Quarter	September 1 – December 31	January 15, 2027

New York State Estimated Tax Deadlines

New York generally follows the same estimated tax schedule as the federal government.

If you are required to make federal estimated payments, you may also need to make New York State estimated tax payments.

Missing state payments can result in additional penalties and interest.

How Do You Know If You Need to Make Estimated Payments?

You may need to make estimated tax payments if:

• You're self-employed.

• You own a business that passes income through to your personal return.

• You receive substantial 1099 income.

• You have rental property income.

• You are not having enough taxes withheld from other income sources.

If your income has increased significantly during the year, it may be a good idea to review your tax projections before the next payment deadline.

Common Estimated Tax Mistakes

1. Waiting Until Tax Season

Many business owners don't set aside money for taxes and are shocked when they owe thousands of dollars when filing their return.

2. Forgetting About State Taxes

Business owners often focus on federal taxes and overlook New York State estimated payments.

3. Not Adjusting for Increased Income

If your business grows throughout the year, your previous estimated payments may no longer be sufficient.

4. Ignoring S-Corporation and PTET Planning

For New York business owners, proper planning around Pass-Through Entity Tax (PTET) elections and estimated payments can have a substantial impact on overall tax liability. Businesses must elect into PTET annually.

Tips for Staying Prepared

Here are some simple habits that can help:

• Set aside a percentage of every payment you receive for taxes.

• Review your profit and loss statements monthly.

• Meet with your accountant or tax professional throughout the year.

• Track all sources of income, including side jobs and contract work.

• Keep bookkeeping current and accurate.

Accurate bookkeeping makes it much easier to calculate estimated tax obligations and avoid costly surprises.

Don't Wait Until the Last Minute

Estimated taxes aren't just another compliance requirement—they're an important part of managing your business finances. Planning ahead can help you avoid penalties, improve cash flow, and eliminate the stress of a large unexpected tax bill.

Whether you're a contractor, consultant, service provider, or small business owner, understanding your estimated tax obligations today can save you significant headaches tomorrow.