Estimated tax payments may be needed when withholding does not cover tax on business, investment, retirement, rental or other income. The amount depends on expected income, deductions, credits, taxes and payments already made, with federal and Maryland obligations reviewed separately.
General information for 2026 planning; individual facts and current law control.
Income tax is generally paid as income is earned or received, not only when a return is filed. For employees, withholding often does much of that work. Business owners, investors, retirees and people with side income may need estimated payments because withholding does not cover everything. The question is not simply whether you received a particular tax form, but whether enough tax is being paid throughout the year.
For 2026 planning, start with your expected income and the payments already being made. Federal estimated tax can cover income tax and other taxes, including self-employment tax. Maryland may require a separate calculation and separate payments. A federal payment does not automatically satisfy a state obligation, and the two calculations should not be blended into one unexplained transfer.
Who should review estimated payments?
Self-employed individuals, partners and S corporation shareholders commonly need a review. So do people receiving investment income, taxable retirement income, rental income or gains from a sale. An employee with a side business can have a payment obligation even while receiving regular paychecks. Conversely, a person with sufficient withholding may not need a separate estimated payment.
A major change deserves attention before filing season. Selling investments, starting consulting work, retiring or receiving a large business distribution may alter the projection. The taxable amount may not equal the cash received. For example, an S corporation shareholder's taxable pass-through income is not determined solely by the amount transferred from the business account.
How is the amount calculated?
The IRS points individuals to Form 1040-ES and Publication 505. The calculation considers expected income, deductions, credits and taxes for the current year. Last year's return can be a useful starting point, but it is not a substitute for considering what changed. Updated books and recent pay statements make a projection more useful than a guess based on revenue alone.
Underpayment rules can use current-year tax or a qualifying prior-year comparison, with special rules for some taxpayers. Meeting a penalty-protection rule does not necessarily mean the final balance will be small. You can be on track to avoid an underpayment penalty while still owing additional tax at filing. A projection should distinguish those two goals so you can reserve cash appropriately.
Timing matters as much as the annual total
The estimated-payment calendar divides the year into payment periods that are not all equal in length. Paying the right total late may not correct every earlier underpayment. Weekend and holiday rules can affect due dates, and special circumstances may change the result. Confirm the applicable calendar rather than assuming every payment is due exactly three months after the previous one.
If income arrives unevenly, an annualized-income method may help align required installments with when the income was earned. It requires supporting information and is not automatic. Keep records of when significant income and expenses occurred. Tell your tax professional about a late-year gain or a seasonal business rather than assuming all income was earned evenly.
Keep clear payment records
Save confirmations showing the amount, date, tax year, agency and payment type. An extension payment, an estimated payment and a payment for a filed return are not interchangeable labels. Check the selection before submitting an online payment. If a spouse makes the payment, retain the identifying details needed to reconcile it to the correct return.
Employees may also consider adjusting withholding after reviewing their full tax picture. The best approach depends on the facts, including federal and state rules. Do not wait for a surprise balance to begin the conversation. Gather your latest pay statements, business results and payment confirmations, then contact Kalish & Associates, P.A. if you would like help reviewing your estimated-tax plan.
Wondering if your estimated payments are on track? Give us a call, and we'll look at your numbers with you.
Frequently asked questions
Does everyone with a side business need a separate estimated payment?
Not necessarily. Someone with sufficient withholding may not need a separate estimated payment; review the full tax picture.
Does a federal payment cover Maryland estimated taxes?
No. Maryland may require a separate calculation and payment. A federal payment does not automatically satisfy the state obligation.
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