The New Optometry Practice Tax Calendar: Every Deadline You Cannot Miss
A practical 2026 tax deadline calendar for new optometry practices, covering estimated payments, filings, and key dates to avoid penalties.
Starting an optometry practice means taking on a new set of responsibilities, and taxes are among the most critical. Missing a deadline can result in penalties and interest that eat into your hard-earned revenue. This guide lays out the essential tax deadlines for a new optometry practice in 2026, with concrete dates and steps you can take this week to stay on track.
Why a Tax Calendar Matters for Your Practice
As a practice owner, you are now responsible for more than just your personal taxes. You have business taxes, payroll taxes, and possibly sales tax on retail items like contacts and eyeglasses. The IRS and state agencies do not extend deadlines for new businesses. Penalties for late filing or payment can range from 5% to 25% of the tax due, plus interest. A simple calendar can save you thousands.
Key Deadlines for 2026: A Month-by-Month Overview
The following dates are based on standard IRS rules. Always confirm with your accountant, as some deadlines shift if they fall on a weekend or holiday. In 2026, most deadlines fall on the 15th, but check the official IRS calendar.
January 15: Final Quarterly Estimated Tax Payment for 2025
If you made estimated payments in 2025, the last one is due January 15, 2026. This covers the fourth quarter of 2025. Even if your practice started late in the year, you may owe this if you had any taxable income.
January 31: Forms W-2 and 1099-NEC Due
If you have employees, you must provide W-2 forms to them and file with the Social Security Administration. If you paid independent contractors $600 or more, you must issue 1099-NEC forms. This is a hard deadline; no extensions for providing these forms to recipients.
February 28 or March 31: File Information Returns
File copies of W-2s and 1099s with the IRS. Paper filing is due February 28; electronic filing is due March 31. E-filing is easier and often required if you file many forms.
March 15: S-Corp and Partnership Tax Returns Due
If your practice is an S-corp or partnership, Form 1120-S or Form 1065 is due March 15. You can request a 6-month extension, but you must still pay any tax due by this date to avoid penalties.
April 15: Individual Tax Return and First Quarterly Payment
If you are a sole proprietor or single-member LLC, your personal tax return (Form 1040) is due April 15. This is also the due date for your first 2026 estimated tax payment. You can file an extension for the return, but the payment is still due.
June 15: Second Quarterly Estimated Tax Payment
For many practices, this is a significant payment. If your practice is profitable, you need to pay at least 90% of your current year’s tax liability or 100% of last year’s liability (110% if your AGI was over $150,000) to avoid penalties.
September 15: Third Quarterly Estimated Tax Payment
Another key date. Review your year-to-date income and adjust your payment if needed. If you are an S-corp, your extended tax return is also due September 15.
October 15: Extended Individual Tax Return Due
If you filed for an extension in April, your individual return is due October 15. This is a final deadline; no further extensions.
January 15, 2027: Fourth Quarterly Payment for 2026
Your final estimated payment for 2026 is due January 15, 2027. This is a good time to review your full year and plan for the next.
Estimated Tax Payments: How Much and How to Pay
As a new practice, you may not have a salary or withholdings. The IRS expects you to pay taxes quarterly. Here is how to estimate:
- Calculate your expected adjusted gross income and tax liability for the year.
- Subtract any withholding and credits.
- Divide the remaining amount by 4 and pay each quarter.
- Use Form 1040-ES for individuals or make payments online via the Electronic Federal Tax Payment System (EFTPS).
A common mistake is underpaying. To avoid the underpayment penalty, you must pay at least 90% of your current year’s liability or 100% of the previous year’s liability. With a new practice, your income may vary, so work with a CPA to set a safe amount.
Payroll Taxes: Monthly or Semiweekly Deposits
If you have staff, you must withhold Social Security, Medicare, and income taxes. The IRS requires deposits either monthly or semiweekly, depending on your total tax liability. New employers are often monthly depositors. The due date for monthly deposits is the 15th of the following month. For example, January payroll taxes are due February 15. Semiweekly depositors have different rules based on payday. Use IRS Form 941 to report quarterly, due April 30, July 31, October 31, and January 31.
Sales Tax on Retail Items
Many states require you to collect sales tax on retail sales like contact lenses, eyeglass frames, and over-the-counter products. You must register with your state’s Department of Revenue, collect the tax, and file returns. Filing frequency varies: monthly, quarterly, or annually, depending on your sales volume. For example, in California, you might file quarterly if your sales are under a threshold. Check your state’s rules and set reminders for those deadlines. Late filings can incur penalties of 10% or more.
How to Set Up Your Tax Calendar This Week
Do not wait until April. Here are steps you can take now:
- List all tax obligations: income tax, payroll, sales tax, and any local taxes.
- Mark the key dates above on a digital calendar with reminders 1 week and 1 day before each.
- Set up an EFTPS account to make federal payments online.
- Open a separate bank account for tax savings. Transfer a percentage of each deposit, such as 25% to 30%, to cover taxes.
- Schedule a meeting with a CPA who works with medical practices. They can help you estimate payments and avoid surprises.
Common Mistakes to Avoid
- Missing the January 31 deadline for W-2s: This can result in penalties of $50 to $280 per form.
- Underpaying estimated taxes: The penalty is based on the underpayment amount and time, currently around 7% annualized.
- Ignoring sales tax: Even if you are new, you must collect and remit. Back taxes can accumulate quickly.
- Mixing personal and business expenses: This can trigger audits and complicate deductions.
FAQ
Q: What if I miss a deadline? A: File as soon as possible. Penalties and interest accrue daily, but the IRS may waive penalties if you have reasonable cause. Contact the IRS or your CPA immediately.
Q: Do I need to make estimated payments in my first year? A: Yes, if you expect to owe $1,000 or more. Use the annualized income installment method if your income is uneven, which can reduce penalties.
Q: Can I change my accounting method to save on taxes? A: You can choose between cash and accrual methods. Cash is simpler for new practices, but accrual may be required if you have inventory. Discuss with your CPA.
Q: How do I handle sales tax for online sales of contacts? A: You must collect sales tax based on the destination state, even if you sell online. Register in states where you have nexus, which may include your home state and others if you have a physical presence.
The Bottom Line
A tax calendar is not optional for a new optometry practice. Missing deadlines can cost you thousands in penalties. Use the dates above as a starting point, but verify with your accountant and state agencies. Set up your calendar this week, set aside funds, and stay ahead of your obligations. With a little planning, you can focus on your patients instead of worrying about tax surprises.