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Calculating Marginal Tax Brackets for tax year 2018 (due in 2019)

2018 Marginal Tax Rates Calculator

Knowing your income tax rate can help you calculate your tax liability for unexpected income, retirement planning or investment income. This calculator helps you estimate your average tax rate, your tax bracket, and your marginal tax rate for the current tax year.

This calculator shows marginal rates for 2018. We offer calculators showing marginal rates from 2016, 2017, 2018, 2019, 2020 & 2021. Click here for the current year calculator.

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Marginal Versus Effective Tax Rates: How Much Do You Really Pay?

The old saying goes nothing in life is certain except death and taxes. Since we're not into the macabre, let's talk about taxes. The history of taxation in the United States is an important one. It was a protest against unjust taxes that led to the formation of our country when we broke away from England over tea imports. Over the years, citizens have despised the existence of an income tax system whilst sometimes enjoying the governmental benefits it provides. One thing is certain. Calculating and filing annual taxes has become increasingly complicated and a task most of us do not look forward to each time April 15th rolls around. Hopefully, the following information will make your life easier.

Tax graphics.

Gather Your Documents

To give yourself the best chance of success and reduce the chances of a frustration headache, the first order of business should be to collect every possible document or bit of information you could possibly need to fill out the appropriate forms. Since our marginal tax system is based on income, you need to have exact numbers of what you did or didn't earn. The following list breaks down the documents needed into four categories: personal information, income, adjustments, and deductions.

Personal Information

  • You and your spouse's (if married) social security numbers
  • Social security numbers for any dependents you intend to claim

Income Information

  • W-2 forms for you and spouse from all employers
  • 1099 forms if you did more than $600 worth of contract work
  • Investment income
  • Any local/state tax refunds you received in the previous year
  • Business income (if applicable) in the form of accounting records
  • Unemployment income
  • Rental income
  • Social Security benefits
  • Miscellaneous income (such as from jury duty or gambling winnings)

Adjustments

  • Home buyer tax credit
  • Green energy credits
  • IRA contributions
  • Mortgage and/or student loan interest
  • MSA contributions
  • Self-employed health insurance
  • Moving expenses

Deductions

  • Education costs
  • Childcare costs
  • Adoption costs
  • Charitable contributions
  • Casualty / theft losses
  • Business expenses
  • Medical expenses
  • Job and moving expenses
  • State and local taxes (SALT)

The preceding list may be daunting but, rest assured, collecting all this information beforehand will save a lot of grief when it comes time to sit down and fill out your tax forms. Also, if you're expecting a refund you'll need the name of your bank, checking account number, and routing number to have it directly deposited.

Common Deductions

Part of what makes the American tax code so complicated is the sheer number of allowed deductions. This is a good thing, though, because it reduces your income and can move you into a lower tax bracket. Most people love it when they can pay less in taxes. The following lists the most common deductions taken. Be sure you don't miss any of these.

Standard Deduction: this is an amount that you deduct right off the top just for being a living, breathing, tax-paying U.S. citizen. The current rate is $12,000 for an individual or married filing individually, $18,000 for head of household, or $24,000 for a couple. In some instances, itemizing your deductions might be a better choice but many simply opt for the standard deduction. If you decide to itemize, the following are a few not to miss.

  • Philanthropy: Whether you donated cash or goods to charity, the full amount (fair market value for goods) is deductible. Keep good records in the form of a receipt from the organization that includes the date and amount.
  • Medical and Dental: If you spent a lot of time in a doctors' offices or hospitals, add it up. Any amount that exceeds 10 percent of your adjusted gross income can be used as a deduction.
  • Homeownership: The government has always encouraged homeownership, so offers deductions related to buying one. Specifically, you can deduct home mortgage interest on up to $750,000 of mortgage debt, property taxes, and mortgage insurance. Interest expenses on HELOC and home equity loans are not tax deductible unless the debt is obtained to build or substantially improve the homeowner's dwelling.

Tax Rates

The tax rate you pay on income is, obviously, foremost in your mind when you fill out the IRS paperwork. One would think that understanding tax rates would be inherently simple, but the government likes to keep things interesting with terms like “effective tax rate” and “marginal tax rate.” It's a good idea to understand how both work.

Effective Tax Rate: In simple terms, this is the average tax rate you pay. It takes into account the reality that our tax system is progressive, which means that those with higher income pay a higher rate. Tax rates are applied through a five-tier setup that starts at 10 percent (for those who make less than $9,276) and works its way up to 33 percent (for those earning $190,150 or more). Individual income for a single person is taxed at various rates across the spectrum of tiers. For example, your first $9,275 is taxed at 10 percent. Income between $9,275 and $37,650 is taxed at 15 percent. The pattern continues on up the chart. To find your effective tax rate, add up the amounts of the varying tax rates to find a single sum. Divide that number by income to find your average tax rate.

Marginal Tax Rate: An easy way to think of marginal tax rate is to define it as the rate you would pay on a fictional additional dollar of income. Considering the American progressive system, your marginal tax rate rises with income and is equal to the rate of the highest tier you reach through what you earn. The marginal tax rate is the highest rate you pay and is always higher than the effective tax rate. The latter is a more reflective vision of reality since it takes into account the varying rates paid as you move through the tiers.

Tax Preparation: How Much Does it Cost?

While you can certainly choose to sit down at the kitchen table with nothing but IRS forms, financial documents, and a pencil, a growing number of people choose to cough up the extra cash to use tax prep software or even a real, live tax professional. The best part? This expense is deductible. The question remains, how much does it cost?

There are a variety of online tax filing solutions. Names you've heard of like TurboTax, TaxAct, H&R Block, Quicken, Tax Slayer...the list goes on. In general, expect to pay more the more complicated your tax life is. The cost to use software also rises when you need to file self-employment forms or a Schedule C. Credit Karma Tax is the only software that offers a free option to file simple federal and state returns at no cost. For the rest, expect to pay around $50 to $100 to accomplish the task.

If you prefer to interact with a human being, there are a multitude of choices, from well-known franchises like H&R Block on down to independent one-person bookkeeping services. As with tax software, you pay more for complicated circumstances. A brand-name chain might cost in the $400-500 range to get the deed done. Local independent tax professionals are all over the map when it comes to price. You might place less than with the big names or you might pay more. Your best advice is to nail down the exact cost upfront so there are no surprises.

Odds and Ends

There are some issues that arise frequently and cause some consternation. How do you get your refund? How do you pay a late amount? How can you file for an extension? Let's take each in turn.

  • Refund: The IRS has made a serious push in recent years to issue refunds by electronic direct deposit. They've made it easy by providing spaces on the tax form itself to provide your banking information. While you can still opt for a snail mail return check, it will take 6-8 weeks versus 21 days for direct deposit.
  • Pay a late amount: If you owe the IRS money, it is in your best interest to contact them by phone and make arrangements to pay it back in full if you can or by installments if you can't. Faking your death, changing your identity, and moving to Siberia is a poor second option.
  • Extension: If April 15th sneaks up on you and you're not even close to being ready, it's easy to file for an automatic six-month extension. The IRS offers information about form 4868 here.

And there you have it. The world of taxes in a single article. Good luck out there with your Uncle Sam.

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