Income Tax Calculator
The Income Tax Calculator projects how much refund you might receive or owe on your federal return. It’s geared toward U.S. taxpayers and uses the 2025‑2026 tax brackets (the One Big Beautiful Bill). You can also apply the 2026 rates for 1040‑ES forecasts, future planning, or side‑by‑side comparisons.
Taxable Income
To approximate your tax refund or balance due, you first need to calculate a reliable taxable income figure. You can reference your W‑2 forms when completing the fields; any applicable boxes from the W‑2 will appear beside the inputs. Start with gross earnings, then subtract deductions and exemptions such as 401(k) or pension contributions. The remainder is your taxable income.
Other Taxable Income
Interest Income – Most interest earned, whether from checking accounts, savings accounts, certificates of deposit, or tax refunds, is treated as ordinary income. Certain types, like interest from municipal bonds or private‑activity bonds, are exempt.
Short‑term Capital Gains/Losses – Gains or losses from assets held under a year are taxed at regular income rates.
Long‑term Capital Gains/Losses – Profits or losses from assets owned for at least a year are taxed according to the applicable ordinary‑income marginal rate.
Ordinary Dividends – Unless a dividend is specifically classified as qualified, it is treated as ordinary income and taxed accordingly.
Qualified Dividends – These dividends are taxed at the lower long‑term capital‑gain rates, provided they meet strict IRS qualification criteria.
Passive Income – Distinguishing passive from active earnings matters because passive losses can be deducted. Passive income generally stems from rental properties or businesses where you lack material participation. Unused passive losses can be carried forward until you dispose of the activity in a taxable event.
Exemptions
In general, tax exemptions are monetary allowances intended to shrink or completely wipe out taxable income. They aren’t limited to personal income tax; for example, charitable and religious bodies usually enjoy tax‑free status. Many airports offer duty‑free shopping as a form of tax‑exempt purchase, and state or local governments typically aren’t subject to federal income tax.
Tax Deductions
Tax deductions stem from qualifying expenditures. By subtracting these costs, a taxpayer’s tax liability is reduced because they lower the portion of adjusted gross income that is taxed. Deductions fall into two categories: above‑the‑line (ATL) and below‑the‑line (BTL) itemized deductions, each applied according to the marginal tax rate. The “line” refers to the adjusted gross income (AGI) shown at the bottom of Form 1040.
Modified Adjusted Gross Income (MAGI)
Modified Adjusted Gross Income (MAGI) is used mainly to decide if a taxpayer qualifies for certain deductions. It’s essentially the AGI with a few specific deductions added back. The adjustments include:
- Student loan interest
- One-half of self-employment tax
- Qualified tuition expenses
- Tuition and fees deduction
- Passive loss or passive income
- IRA contributions, taxable Social Security payments
- The exclusion for income from U.S. savings bonds
- The exclusion under 137 for adoption expenses
- Rental losses
- Any overall loss from a publicly traded company
- Tips and overtime compensation
- Car loan interest
- Seniors
Above-the-line Deductions
Above‑the‑line (ATL) deductions reduce your AGI, meaning less income is subject to tax. They cover expenses reported on Schedules C, D, E, F and other “Adjustments to Income.” One benefit is that ATL deductions are permitted under the alternative minimum tax. They do not influence the choice between taking the standard deduction or itemizing (BTL). For exact calculations, refer to the IRS website. Below are some typical ATL deductions.
- Traditional IRA contributions – Most individuals can contribute to a traditional IRA, but the contribution isn’t automatically deductible. If your Modified Adjusted Gross Income exceeds the statutory limit, the deductible portion may be reduced or eliminated.
- Student loan interest – Interest paid on federal student loans appears in box 1 of Form 1098‑E. Married couples filing separately cannot claim this deduction, and it phases out once MAGI surpasses the allowed threshold ($100 k for singles/head‑of‑household/widowers, $200 k for joint filers in 2025).
- Qualified tuition and fees – You may deduct eligible education expenses as defined by the IRS. This deduction is unavailable to married taxpayers filing separately and cannot be taken together with an education tax credit.
- Moving expenses – Costs of transporting household goods for a job‑related move are fully deductible, provided the employer does not reimburse you and the new workplace is at least 50 miles farther from your old residence than the old workplace was.
- Tips – For tax years 2025‑2028, up to $25 000 of qualified tips per year may be deducted. The benefit phases out when MAGI exceeds $150 000 ($300 000 for joint filers).
- Overtime compensation – In the 2025‑2028 period, employees can deduct up to $12 500 of overtime pay annually (or $25 000 for married couples filing jointly). The deduction is reduced once MAGI rises above $150 000 ($300 000 for joint returns).
- Car loan interest–For tax years 2025 through 2028, individuals may deduct up to $10,000 per year in interest paid on a loan used to purchase a qualified vehicle. The deduction phases out for taxpayers with a modified adjusted gross income over $100,000 ($200,000 for joint filers).
- Deduction for seniors–For tax years 2025 through 2028, individuals aged 65 and older may claim an additional deduction of $6,000 per year for single filers, or a total of $12,000 per year for married couples in which both spouses qualify. The deduction phases out for taxpayers with a modified adjusted gross income over $75,000 ($150,000 for joint filers).
Below-the-line Deductions
BTL deductions refer to the Standard Deduction or Itemized Deductions from Schedule A. A BTL deduction is always limited to the amount of the actual deduction. For example, a $1,000 deduction can only reduce net taxable income by $1,000. Please consult the official IRS website for more detailed information regarding precise calculations of tax deductions. Examples of common BTL deductions are listed below, along with basic information.
- Mortgage interest–This can apply to a regular mortgage up to a certain limit; $750,000 in 2025 and 2026, for a main residency, a second mortgage, a line of credit, or a home equity loan. Loans that aren't secured debt on a home are considered personal loans, which are not deductible. The IRS defines a "home" as anything from a house to a condo, co-op, mobile home, boat, or RV.
- Charitable donations–Only donations to qualified charities can qualify as tax deductions. Handouts to the homeless or payments to local organizations that aren't classified as non-profit by the IRS cannot be deducted.
- Medical expenses–Any expense paid for the prevention, diagnosis, or medical treatment of physical or mental illness or any amounts paid to treat or modify parts or functions of the body for health can be deducted. Medical expenses for cosmetic purposes do not qualify. If premiums are paid with after-tax dollars, deductions are limited only to the expenses that exceed 10% of adjusted gross income, and 7.5% for anyone 65 and older. Note that health savings account contributions are ATL deductions.
- Sales and local tax–Sometimes referred to as SALT (state and local tax), this federal deduction can be either income tax or sales tax, but not both. Taxpayers who live in states that don't have an income tax are probably better off using their sales tax for the deduction. In 2025 and 2026, this deduction cannot exceed $40,000 and $40,400. The SALT cap begins to phase down to $10,000 once the Modified Adjusted Gross Income exceeds $500,000 for 2025 and $505,000 for 2026.
Most BTL deductions are the run-of-the-mill variety above, including several others like investment interest or tax preparation fees. However, the IRS allows the deduction of certain costs that can reduce tax bills. Examples are given below, though they are not the entire package. For further information, visit the official IRS website.
- Out-of-pocket charitable contributions–Not only are donations to charitable organizations deductible, out-of-pocket expenses for charitable work can also be deducted, for example, buying paint to paint the walls of a cathedral or buying ingredients to cook for a homeless shelter.
- Tax savings for teachers–This deduction allows K-12 educators to deduct up to $250 a year for school materials.
- Paying babysitters–Believe it or not, if a person performs volunteer work at a non-profit while a babysitter takes care of their kids at home, any payment to the babysitter for childcare can be deducted!
- Job searching–By itemizing expenses of costs associated with searching for a new job, if the expenses accrued when searching for a new job exceed two percent of adjusted gross income, the qualifying expenses over the threshold can be deducted. Examples of such out-of-pocket expenses can include the mileage of driving to interviews, printing resumes or business cards.
- Smoking cessation–Participating in a smoking cessation program can be considered a medical tax deduction. The deduction can also apply to prescription drugs used to ease nicotine withdrawal.
- Disaster recovery–If a taxpayer's home is affected by a natural disaster and the taxpayer requires federal aid, uninsured costs of recovery can be deducted.
Business expenses
Expenses that are necessary for running a trade or business are generally deductible when the activity is intended to make a profit. To qualify, the cost must be both ordinary and essential. It helps to separate genuine business costs from personal or capital expenditures and from amounts used to compute cost of goods sold. For sole proprietors, such outlays are treated as above‑the‑line (ATL) deductions because they appear on Schedule C and reduce the adjusted gross income. Business‑related costs are governed by many intricate rules; some qualify as ATL, many fall into the below‑the‑line (BTL) category. Consulting the IRS guidelines on business‑expense deductions is advisable.
Standard vs. Itemized Deductions
Imagine a diner offering two ways to eat: a menu‑style à la carte meal, where you pick each dish and the prices add up, versus a set‑price dinner where the courses are pre‑selected for a single fee. The à la carte approach mirrors itemized deductions, letting you tally individual expenses, while the fixed‑price dinner resembles the standard deduction, providing a predetermined amount without itemizing. Though the comparison simplifies a complex topic, it conveys the basic distinction between the two deduction methods.
Taxpayers usually itemize when the sum of their qualifying expenses exceeds the flat standard deduction, because a larger deduction translates to a lower tax bill. However, itemizing demands more effort—keeping receipts, organizing paperwork, and performing calculations. Alternatively, most filers opt for the standard deduction, which is straightforward and saves time. Congress sets this amount each year; for 2025 it is $15,000 for single filers and $30,000 for married couples filing jointly, a modest increase from the 2024 figures of $14,600 and $29,200.
The calculator automatically determines whether the standard or itemized deduction (based on inputs) will result in the largest tax savings and uses the larger of the two values in the estimated calculation of tax due or owed.
Tax Credits
Legislators create tax credits to encourage behaviors they view as socially beneficial—such as environmentally friendly actions, retirement savings, child adoption, or education. Unlike deductions, which merely lower taxable income, a credit reduces the tax owed dollar for dollar. Consequently, a $1,000 credit cuts a $12,000 liability down to $11,000, making credits generally more potent than an equivalent‑value deduction.
Tax credits come in two main flavors. Non‑refundable credits can bring your tax liability down to zero but not below; any excess is forfeited. Refundable credits, on the other hand, pay you the full amount even if your tax bill becomes negative, resulting in a refund of the surplus. Refundable credits are less common than their non‑refundable counterparts.
Because calculating taxes can be intricate, our Income Tax Calculator only includes fields for a selection of common credits to keep things simple. You can still add other credits manually in the "Other" section—just be sure to compute the amounts according to IRS rules. The explanations here are brief overviews; for precise guidance, refer to the official IRS website.
Examples of some common tax credits are separated into the four categories below.
Income
Earned Income Tax Credit – One of the most well‑known refundable credits, the EITC targets low‑ to moderate‑income families, generally those earning up to roughly $70,000, though eligibility depends on additional factors. The credit starts as a percentage of earned wages, rises to a maximum, then phases out as income climbs further. Households with qualifying children receive a substantially larger credit than those without, and the credit is primarily refundable.
Foreign Tax Credit–This is a non-refundable credit that reduces the double tax burden for taxpayers earning income outside the U.S.
Children
Child Tax Credit – Taxpayers may claim up to $2,200 per qualifying child, of which $1,700 is refundable. The credit begins to phase out when modified AGI reaches $200,000 for single filers ($400,000 for married filing jointly).
Child and Dependent Care Credit – Taxpayers can receive a credit equal to 20‑50 % of eligible care expenses, capped at $3,000 for one qualifying individual or $6,000 for two or more. The credit applies to care for children under 13, a disabled spouse, or another dependent, and its amount is also limited by the taxpayer’s income.
Adoption Credit–This is a non-refundable tax credit for qualified expenses up to a certain level for each child adopted, whether via public foster care, domestic private adoption, or international adoption.
Education & Retirement
Saver’s Credit – This non‑refundable credit encourages low‑ and moderate‑income earners to contribute to retirement accounts. Depending on adjusted gross income, taxpayers can claim 10 %, 20 % or 30 % of contributions, up to $2,000 (or $4,000 for married filing jointly). Eligible individuals must be at least 18 years old, not full‑time students, and cannot be claimed as a dependent on someone else’s return.
American Opportunity Credit – The American Opportunity Credit applies to qualified tuition and related costs for students enrolled in their first four years of post‑secondary education. Eligible learners can claim up to $2,500 per year. If the credit reduces the tax owed to zero, up to 40% of the unused portion (maximum $1,000) may be refunded.
Lifetime Learning Credit – This credit can be claimed for a wide range of educational pursuits, including graduate programs, undergraduate courses, and vocational training. Qualified participants may receive a credit of up to $2,000 per taxpayer, but it is entirely non‑refundable.
It is possible to claim either the American Opportunity Credit or Lifetime Learning Credit in any one year, but not both.
Environmental
Residential Energy Credit – Homeowners who install solar panels, wind turbines, geothermal systems, or fuel‑cell equipment may qualify for the Residential Energy Credit, provided the electricity generated is consumed on the premises.
Non-business Energy Property Credit – The Non‑business Energy Property Credit rewards the installation of energy‑saving equipment that meets Department of Energy efficiency standards. One category covers qualified improvements such as attic insulation, energy‑efficient doors, windows, skylights, and certain roofing materials. The second category covers residential energy property, for example electric heat pumps, air‑conditioning units, biomass stoves, and natural‑gas furnaces or water heaters.
Alternative Minimum Tax (AMT)
The Alternative Minimum Tax (AMT) functions as a parallel tax calculation that ignores the standard deduction and many common itemized deductions—such as state and local income taxes, business expenses, mortgage interest, and property taxes. Taxpayers whose income exceeds the AMT exemption must pay whichever amount is larger: the regular tax or the AMT. Because the AMT disallows several deductions, it often impacts high‑income earners, though certain strategies can lessen its effect.
- Decrease your AGI by contributing the maximum allowed to retirement vehicles—401(k), IRA, or an HSA.
- Limit the amount of itemized deductions you claim.
- Boost charitable giving to offset taxable income.
Generally, only taxpayers with adjusted gross incomes that exceed the exemption should worry about the AMT. The IRS provides an online AMT Assistant to help figure out whether a taxpayer may be affected by the AMT.