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

2026-08-21

A practical guide to federal and state tax deadlines for new audiology practices, with quarterly dates, filing tips, and penalties to avoid.

Starting an audiology practice means taking on a new set of responsibilities, and taxes are among the most critical. Missing a deadline can trigger penalties and interest that eat into your hard-earned revenue. This guide lays out the essential tax calendar for a new audiology practice, with specific dates, what to file, and how to stay compliant without stress.

Why a Tax Calendar Matters for Your Practice

Unlike a salaried job, your practice’s taxes are not automatically withheld. You are responsible for estimating and paying income tax, self-employment tax, and payroll taxes (if you have employees). The IRS expects payments throughout the year, not just on April 15. A missed deadline can result in a failure-to-file penalty of 5% of the unpaid tax per month, up to 25%, plus interest. For a practice earning $150,000 in net income, that could mean thousands in avoidable costs.

Key Tax Deadlines for 2026

Below is the federal tax calendar for a calendar-year practice (most new practices use this). State deadlines often align with federal, but verify with your state’s revenue department. Mark these dates on your calendar now.

Quarterly Estimated Tax Payments (Form 1040-ES)

If you are a sole proprietor, LLC, or S-corp owner, you must pay estimated tax if you expect to owe $1,000 or more. The IRS requires four payments per year. For 2026, the due dates are:

April 15, 2026: Payment for Q1 (January 1 to March 31)
June 15, 2026: Payment for Q2 (April 1 to May 31)
September 15, 2026: Payment for Q3 (June 1 to August 31)
January 15, 2027: Payment for Q4 (September 1 to December 31)

Each payment should cover your income tax and self-employment tax (15.3% for Social Security and Medicare). To avoid underpayment penalties, pay at least 100% of last year’s tax liability (or 110% if your adjusted gross income was over $150,000). A common mistake is paying too little early in the year, then facing a large bill in April. Use the IRS Form 1040-ES worksheet to calculate your quarterly amount.

Payroll Tax Deposits (If You Have Employees)

If you hire staff, you must withhold federal income tax, Social Security, and Medicare from their wages, and you must deposit these amounts regularly. The IRS uses two schedules:

Monthly depositor: Deposit by the 15th of the following month. For example, March wages are due by April 15.
Semiweekly depositor: Deposit within 3 banking days after payday. This applies if your total tax liability exceeds $50,000 in a lookback period.

New practices often start as monthly depositors. Use Form 941 (Employer’s Quarterly Federal Tax Return) to report these taxes. Due dates for 2026:

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)

If you use a payroll service, they will handle deposits, but you are still responsible for filing Form 941 on time.

Annual Federal Tax Returns

Your practice’s annual return depends on your business structure:

Sole proprietorship (Schedule C): File with your personal return (Form 1040) by April 15, 2026.
Partnership (Form 1065): Due March 15, 2026. This return is informational; partners pay tax on their share.
S-corp (Form 1120-S): Due March 15, 2026.
C-corp (Form 1120): Due April 15, 2026 (or the 15th day of the 4th month after year-end).

If you need more time, file Form 7004 for a 6-month extension. For sole proprietors, the extension is automatic if you file Form 4868 by April 15. Note: An extension to file is not an extension to pay. You must still pay any tax due by the original deadline.

State and Local Deadlines

Most states require quarterly estimated payments and annual returns, often aligned with federal dates. Some states, like California, have different due dates for S-corp and partnership returns (March 15). Check your state’s department of revenue website for specifics. Also, if you have a physical location, you may owe local business taxes or personal property taxes on equipment like audiometers and tympanometers. These are often due in January or February. Contact your city or county tax office to confirm.

Practical Steps to Stay on Track

Set up a dedicated tax calendar using software like QuickBooks or a simple spreadsheet. Add all federal and state deadlines with reminders 2 weeks before each due date.
Open a separate bank account for tax savings. Transfer 25-30% of every deposit into this account. For a practice netting $10,000 per month, that is $2,500 to $3,000 set aside monthly.
Use accounting software to track income and expenses in real time. This makes quarterly estimates accurate and reduces year-end stress.
Work with a CPA who specializes in healthcare practices. They can help you choose the right entity structure, maximize deductions (like equipment depreciation under Section 179), and avoid penalties.
Review your numbers quarterly. Before each estimated payment, compare your actual income to your projection. Adjust your payment if needed to avoid underpayment.

FAQ

What happens if I miss a quarterly estimated tax payment?

The IRS charges a penalty based on the amount you underpaid and the number of days late. The rate is currently around 7% per year, compounded daily. You can reduce or eliminate the penalty if you meet one of the safe harbor rules (e.g., paying 100% of last year’s tax).

Can I file my practice’s taxes separately from my personal return?

If you are a sole proprietor or single-member LLC, your business income is reported on your personal Form 1040. You do not file a separate business return. For partnerships and S-corps, you file an informational return, but the tax is paid on your personal return.

Do I need to pay sales tax on audiology services?

Most states exempt medical services from sales tax, but you may need to collect sales tax on retail items like hearing aid batteries or accessories. Check your state’s rules. For example, in Texas, hearing aids are exempt, but batteries are taxable. Register with your state’s comptroller to collect and remit sales tax, typically on a monthly or quarterly basis.

What deductions can I claim for my audiology practice?

Common deductions include equipment (audiometers, sound booths), office rent, utilities, professional liability insurance, continuing education, and home office expenses (if you have a dedicated space). Section 179 allows you to deduct the full cost of qualifying equipment in the year you place it in service, up to $1,220,000 for 2026.

The Bottom Line

A tax calendar is not optional for a new audiology practice. Missing deadlines leads to penalties, interest, and unnecessary stress. The key dates are quarterly estimated payments (April 15, June 15, September 15, January 15), payroll tax filings (April 30, July 31, October 31, January 31), and your annual return (March 15 or April 15). Set up a system now: use a calendar, save a percentage of every deposit, and consult a CPA. With these steps, you can keep your practice financially healthy and avoid costly surprises.