The New Podiatry Practice Tax Calendar: Every Deadline You Cannot Miss

2026-08-21

A practical guide to podiatry practice tax deadlines in 2026, with quarterly and annual dates, estimated payments, and steps to stay compliant.

Starting a podiatry practice means taking on tax responsibilities you may not have faced as an employee. Missing a deadline can trigger penalties and interest, which cut into your revenue. This guide lays out the exact dates for 2026, what you need to file or pay, and how to prepare so you never miss a critical deadline.

Why Your Tax Calendar Differs from a Standard Business Calendar

Podiatry practices are typically structured as LLCs, S-corps, or sole proprietorships. Your tax deadlines depend on your entity type and fiscal year. Most practices use a calendar year (January 1 to December 31), so the dates below assume that. If you use a fiscal year, adjust accordingly. Also, if you have employees, you have payroll tax deadlines that are separate from income tax deadlines.

Quarterly Estimated Tax Payments (Form 1040-ES)

If your practice is a sole proprietorship, partnership, or S-corp, you must pay estimated taxes on income that is not subject to withholding. This includes your share of practice profits. The IRS requires quarterly payments. For 2026, the due dates are:

April 15, 2026 (for income earned January 1 to March 31)
June 15, 2026 (for income earned April 1 to May 31)
September 15, 2026 (for income earned June 1 to August 31)
January 15, 2027 (for income earned September 1 to December 31)

Each payment should cover your income tax, self-employment tax, and any alternative minimum tax. To calculate the amount, use the worksheet in Form 1040-ES or work with a CPA. A safe approach is to pay 100% of your prior year’s tax liability (or 110% if your adjusted gross income was over $150,000) to avoid underpayment penalties.

Payroll Tax Deadlines (If You Have Employees)

If you hire staff, you must withhold Social Security, Medicare, and federal income tax from their paychecks. You also pay the employer share of Social Security and Medicare. These taxes are reported on Form 941 quarterly. The deadlines for 2026 are:

April 30, 2026 (Q1: January to March)
July 31, 2026 (Q2: April to June)
October 31, 2026 (Q3: July to September)
January 31, 2027 (Q4: October to December)

You must deposit the taxes during the month they are withheld, using the semiweekly or monthly deposit schedule. The IRS determines your schedule based on the amount you owed in a lookback period. Most small practices use the monthly schedule, depositing by the 15th of the following month. For example, taxes withheld in January are due by February 15, 2026.

Annual Filing Deadlines for Your Practice

Your practice’s annual return is due on the 15th day of the third month after your year-end. For calendar-year businesses, that is March 15, 2026. The specific forms depend on your entity:

Sole proprietorship: Schedule C (Form 1040), due April 15, 2026
Partnership (Form 1065): due March 15, 2026
S-corp (Form 1120-S): due March 15, 2026
C-corp (Form 1120): due April 15, 2026

If you need more time, file Form 7004 to get an automatic six-month extension. This extends the filing deadline, not the payment deadline. You must pay any taxes owed by the original due date to avoid penalties.

State and Local Tax Deadlines

State income tax deadlines often mirror federal dates, but not always. For example, California requires S-corp returns by March 15, but some states have different dates. Also, you may owe state sales tax if you sell orthotics, braces, or retail products. Sales tax filing frequency varies by state and your volume, often monthly, quarterly, or annually. Check with your state’s department of revenue for specific due dates.

Deadlines for Retirement Plans and Health Savings Accounts

If you set up a SEP IRA or solo 401(k), the deadline to contribute for the 2025 tax year is your tax filing deadline, including extensions. For 2025, that is April 15, 2026 (or October 15, 2026, if you extended). For 2026 contributions, the deadline is April 15, 2027. Contributing by the deadline reduces your taxable income for the prior year.

For HSAs, you can contribute up to the annual limit (for 2026, $4,300 for self-only, $8,600 for family, plus $1,000 catch-up if 55 or older) by April 15, 2026, for the 2025 tax year.

Steps to Take This Week

Confirm your entity type and fiscal year. If you are unsure, check your formation documents or ask your accountant.
Mark all 2026 deadlines on your calendar. Use a digital calendar with reminders set one week and one day before each date.
Set up a separate bank account for tax savings. Transfer a percentage of each patient payment (e.g., 25% to 30%) into this account to cover taxes.
Schedule a meeting with a CPA who works with medical practices. They can help you estimate quarterly payments and set up a payroll system if needed.
If you have employees, verify your payroll provider handles deposits and filings. Many services, like Gusto or ADP, automate these tasks for $40-$100 per month plus per-employee fees.

Common Mistakes to Avoid

Missing the March 15 deadline for S-corp or partnership returns. Even if you owe no tax, late filing penalties are $220 per month per partner or shareholder, up to 12 months.
Underpaying estimated taxes. The IRS charges interest on underpayments, and the rate can be around 8% per year. Use the safe harbor rule to avoid this.
Ignoring state deadlines. State penalties can be just as steep. For example, California charges 5% of the unpaid tax per month, up to 25%.
Mixing personal and business expenses. This complicates your return and can trigger audits. Keep separate accounts and credit cards.

FAQ

Q: What if I miss a quarterly estimated tax payment? A: Pay as soon as possible. The penalty is based on the amount you underpaid and the time it was outstanding. You can reduce the penalty by filing Form 2210 and showing that the underpayment was due to a reasonable cause, but this is rare.

Q: Can I change my tax year to avoid a deadline crunch? A: Most practices must use a calendar year unless you have a business purpose for a fiscal year, such as a seasonal pattern. Changing requires IRS approval via Form 1128, and it is not a simple process.

Q: Do I need to file quarterly if I have no profit yet? A: If you have no taxable income, you may not need to make estimated payments. However, if you expect to owe at least $1,000 in tax for the year, you should pay estimated taxes to avoid penalties.

Q: How do I handle sales tax on retail items like custom orthotics? A: Sales tax rules vary by state. Some states exempt medical devices prescribed by a physician, but others do not. Check your state’s tax guide or consult a tax professional.

The Bottom Line

Your podiatry practice’s tax calendar is not optional. Missing a deadline costs you money and stress. The key dates for 2026 are April 15, June 15, September 15, and January 15 for estimated taxes; March 15 for partnership and S-corp returns; and April 15 for sole proprietors. Payroll taxes are due quarterly, with deposits during the month. Set up a system now, whether that is a calendar with reminders, a CPA, or payroll software. Take the five steps listed above this week, and you will stay ahead of the IRS and your state tax agency.