Question 1

What is the difference between marginal and effective tax rate?

Accepted Answer

Your marginal tax rate is the rate applied to your last dollar of income (e.g., 22%). Your effective tax rate is your total federal tax divided by your total income — it is always lower than your marginal rate because the US uses a progressive bracket system where lower income is taxed at lower rates. For example, a single filer with $80,000 in 2026 has a 22% marginal rate but an effective rate of roughly 13–14%.

Question 2

How do US tax brackets work in 2026?

Accepted Answer

US tax brackets work in layers, not on your entire income. In 2026, the seven federal brackets are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Only the income within each bracket is taxed at that rate. For a single filer, the first $11,925 is taxed at 10%, income from $11,926–$48,475 at 12%, and so on. A "raise into a higher bracket" only affects the income above the threshold — never your entire salary.

Question 3

What is self-employment tax and how much is it?

Accepted Answer

Self-employment tax is 15.3% of your net self-employment income (12.4% Social Security + 2.9% Medicare). W-2 employees pay only 7.65% because their employer covers the other half. As a self-employed person or 1099 contractor, you pay both sides. However, you can deduct half of your SE tax from your adjusted gross income, which reduces your income tax bill.

Question 4

When are quarterly estimated tax payments due in 2026?

Accepted Answer

For the 2026 tax year, quarterly estimated payments are due: Q1 (Jan–Mar) on April 15 2026, Q2 (Apr–May) on June 15 2026, Q3 (Jun–Aug) on September 15 2026, and Q4 (Sep–Dec) on January 15 2027. If you expect to owe $1,000 or more in federal taxes beyond withholding, you should make quarterly payments to avoid an underpayment penalty.

Question 5

What is the 2026 standard deduction?

Accepted Answer

The 2026 standard deduction is $15,000 for single filers and married filing separately, $30,000 for married filing jointly, and $22,500 for head of household. Taxpayers 65 or older or blind receive an additional deduction of $1,600 (single) or $1,300 per qualifying person (married). Most taxpayers take the standard deduction; you should only itemize if your deductible expenses exceed these amounts.

Question 6

Should I take the standard deduction or itemize?

Accepted Answer

Take the standard deduction if your itemizable expenses (mortgage interest, SALT up to $10,000, charitable donations, medical expenses above 7.5% of AGI) are less than $15,000 single/$30,000 married. Since the Tax Cuts and Jobs Act of 2017 roughly doubled the standard deduction, about 90% of taxpayers now benefit from taking the standard deduction rather than itemizing.

Rate	Single	Married Filing Jointly
10%	$0 – $11,925	$0 – $23,850
12%	$11,926 – $48,475	$23,851 – $96,950
22%	$48,476 – $103,350	$96,951 – $206,700
24%	$103,351 – $197,300	$206,701 – $394,600
32%	$197,301 – $250,525	$394,601 – $501,050
35%	$250,526 – $626,350	$501,051 – $751,600
37%	Over $626,350	Over $751,600

Tax Calculators 2026

Tax Calculators

2026 Federal Tax Brackets

Tax Guides

Tax Comparisons

Frequently Asked Questions