If you owe $1,000 or more in tax when you file your 2005 return -- and the amount is more than 10% of your total tax bill for the year -- the IRS will assume that you also owe a penalty for failing to pay enough tax during the year via withholding or quarterly estimated tax payments. The penalty is the IRS's not-so-subtle reminder that taxes are due as income is earned, not in April of the following year.
The penalty works a lot like interest on a loan. The rate is currently 7%.
But before you pay the penalty, see if you can fit into one of the exceptions that protects you from it.
From just $107.88 $24.99 for Kiplinger Personal Finance
Be a smarter, better informed investor.
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
- If you paid in at least 90% of your actual tax bill for 2005 (and any required estimated payments were made on time), for example, the penalty doesn't apply.
- If your payments during 2005 equaled the amount of your 2004 tax bill, forget the penalty -- no matter how much extra you owe when you file. However, as with so many tax rules, there is an exception to the neat 100%-of-last-year's-tax exception. If your 2005 adjusted gross income was more than $150,000, you had to pay in at least 110% of your 2004 tax liability to avoid the underpayment penalty.
Bottom line: Before you pay an underpayment penalty, check the rules carefully for a way around it.
And, even if you owe the penalty, don't worry about tackling the complicated Form 2210 to figure out how much you owe. The IRS will be happy to crunch the numbers for you -- you can double-check the bill when you get it. Letting the agency do that will allow you to hold on to your money for a bit longer. The interest clock stops running as soon as you pay your tax bill with your return; there's no interest charged on the penalty amount if you pay it by the date set on the bill.
-
Medicare Open Enrollment 2025: Live Updates, Tips and NewsMedicare Open Enrollment Updates Medicare Open Enrollment starts October 15, through December 7. We're covering everything you need to know to get the best plan for your health and budget.
-
IRS 1099-K Threshold for 2025 Taxes Just Changed: What to Know NowTax Law After years of uncertainty and changing requirements, the 1099-K reporting rules for 2025 are now set, and the thresholds have changed since last year.
-
New Tax Rules: Income the IRS Won’t Touch in 2025Income Taxes From financial gifts to Roth withdrawal rules, here’s what income stays tax-free under the new Trump 2025 tax bill, and some information on what’s changed.
-
Three Popular Tax Breaks Are Gone for Good in 2026Tax Breaks Here's a list of federal tax deductions and credits that you can't claim in the 2026 tax year. Plus, high-income earners could get hit by a 'surprise' tax bill.
-
Tax Brackets 2025 Quiz: How Much Do You Know?Quiz Test your knowledge of IRS rules that impact how much money you keep in your wallet.
-
Retirees Face a Growing Capital Gains Tax Trap: What's Next?Home Sales A changing housing market and unchanged IRS exclusion amounts can add up to a headache for many homeowners. Will Congress offer a fix?
-
New York Inflation Refund Checks Are Coming Soon: What to Know NowTax Relief Inflation relief checks are on the way for over 8 million New York taxpayers. Here's a full breakdown of who gets a payment and when you may expect yours.
-
IRS Phasing Out Paper Checks: What Happens After September 30?Tax Changes Avoid delays when IRS tax refunds and Social Security paper checks are cut off. Here’s what to know.
-
The Most Tax-Friendly States for Investing in 2025 (Hint: There Are Two)State Taxes Living in one of these places could lower your 2025 investment taxes — especially if you invest in real estate.
-
The Final Countdown for Retirees with Investment IncomeRetirement Tax Don’t assume Social Security withholding is enough. Some retirement income may require a quarterly estimated tax payment by the September 15 deadline.
