March 22, 2019 Taxes en_US Mastering your taxes means mastering your deductions. To help, we’ve assembled a 2018 list of tax deductions that you can—and should—take in 2019. The 2018 list of tax deductions you can take in 2019

The 2018 list of tax deductions you can take in 2019

By Ken Boyd March 22, 2019

Springtime is tax time. For most people, that means anxiety and uncertainty. Filing your taxes accurately requires planning. Getting the most out of your taxes demands knowing what deductions you and your family are eligible for.

To help, we’ve assembled a list of tax deductions that you can take in 2019 for the 2018 tax year: the return you’ll file on April 15th of 2019.

As you read through these topics, keep in mind that each deduction is presented in the order that it appears on your personal tax return (Form 1040). Adjusted gross income (AGI) topics, for example, are listed before itemized deductions because that’s how your tax return is organized.

Adjusted gross income deductions

The second page of Form 1040 is where you add up your income from all sources. In addition to your salary, you may earn dividend income on investments or rental income from owning property. Self-employed people post their business profit on Form 1040 Schedule 1, and that profit is added to other income sources.

Once you know your total income, you make adjustments (that is, subtractions) from income to arrive at AGI. The Form 1040 Instructions provide line-by-line explanations, including deductions.

Here are four deductions you may be able to take in 2019:

1. Educator expenses

Many educators pay for school supplies and equipment out of their own pocket. Qualified expenses can be deducted up to $250.

To be eligible, you must be a kindergarten through grade 12 teacher, counselor, principal or aide. You also must work at least 900 hours during the school year. Qualified expenses include professional development course fees, books, supplies, and computer hardware or software.

2. Retirement plans: IRA and SEP plans

Taxpayers may be able to deduct contributions made to retirement plans, but you need to understand the difference between two retirement plan categories. A Simplified Employee Pension (SEP) plan is for self-employed people, and an Individual Retirement Account (IRA) is available to both employees and self-employed workers.

If you contribute after-tax dollars into these plans, the dollar amount of your contribution is tax deductible. Say, for instance, that you earn $100 and pay $20 in federal taxes. If you invest the remaining $80 into an IRA, that $80 is deductible on your tax return. (Naturally, real numbers will be quite larger.)

The rules to determine the amount you can invest are complicated, so check with a tax preparer to comply with the tax laws.

3. Self-employment tax

Confusion often surrounds self-employment tax. As a result, many business owners don’t deduct the proper amount.

Employees pay their share of Social Security and Medicare taxes through payroll withholdings, and the dollar amounts of the withholdings are reported on W-2 forms. Employers also pay a portion of the tax and deduct the taxes paid as a business expense.

For 2018, the employer and the worker each pay a 7.65% tax. High-income earners may pay an additional 2.35% Medicare tax. Check with a tax professional to find out more.

If you’re self-employed, you pay both the employer and employee portion, and then deduct the employer portion on Form 1040. Use Schedule SE to compute the amount of the tax deduction.

4. Student loan interest

A qualified student loan is a loan taken out to pay for qualified higher education expenses for yourself, your spouse, or anyone you claim as a dependent. Qualified higher education expenses include tuition, fees, room and board, books, and supplies

Deductions in this category are the lesser of $2,500 or the amount of interest you actually paid. This is a tax deduction that is phased out, meaning that the higher your income level is, the lower your tax deduction will be, and some taxpayers will not have the deduction at all.

You’ll find a worksheet in the Form 1040 instructions that you can use to calculate the deduction, which is posted to Schedule 1 of Form 1040.

Once you record the deductions, your final AGI is posted to page 2 of Form 1040. The next line item on the form is your standard deduction or itemized deduction.

Itemized deductions

Taxpayers calculate itemized deductions on Schedule A of Form 1040 and then determine if the itemized deduction total is more than the standard deduction.

Standard deductions are currently:

  • Single taxpayers: $12,000
  • Head of household taxpayers: $18,000
  • Married filing jointly tax returns: $24,000

If your itemized deductions are more than the standard deduction, use the itemized deduction amount on your return. The deduction is subtracted from your AGI to calculate your taxable income.

Here are five common deductions that can help you produce a higher itemized deduction total, and lower your taxable income:

5. Casualty and theft losses

Casualty and theft losses refer to losses caused by theft, vandalism, fires, storms, and car accidents. You can deduct the dollar amount of the loss over $100.

If you have more than one loss, you deduct $100 from the dollar amount of each loss to calculate the tax deduction. You also subtract any funds received from an insurance policy claim.

Next, take the total dollar amount of casualty and theft losses and subtract 10% of your AGI (see Form 1040). If you have a loss balance after subtracting the 10% income amount, you can deduct the loss amount on Schedule A.

6. Charitable contributions

This deduction may be the most difficult to track and document because most people make dozens of small donations throughout the year. Keep a log of the donations you make in cash, and document the checks that you write to a charity. If you donate clothing or other items, ask the charity to give you a written receipt.

Contributions of $250 or more require a letter from the charity for tax documentation purposes. Each time that you make a donation, ask the charity for a letter to document your contribution.

7. Home mortgage interest

If you a have a home loan, the tax deductibility of home mortgage interest can have a meaningful impact on your tax bill. The IRS allows you to deduct interest on acquisition indebtedness, which refers to mortgage loans used to buy, build, or improve your home.

The deductibility of interest depends, in part, on when you took out the mortgage on your home:

  • For mortgages taken out before December 15, 2017, married couples filing jointly can deduct mortgage interest on the first $1,000,000 of debt. Married taxpayers filing separately can deduct mortgage interest on the first $500,000 of debt.
  • For mortgages taken out after December 15, 2017, married couples filing jointly can deduct mortgage interest on the first $750,000 of debt. Married taxpayers filing separately can deduct mortgage interest on the first $375,000 of debt.

Note that the size of your mortgage loan is now capped for tax purposes. Many real estate professionals promote the idea that “home mortgage interest is tax deductible,” but the entire amount of mortgage interest may not be tax deductible.

8. Medical and dental expenses

This deduction is likewise a bit complex because you can only deduct medical and dental expenses on Schedule A if the total amount exceeds 7.5% of your AGI. The 7.5% is described as a “floor.” If your total expenses are below the 7.5% floor, they are not deductible at all.

Keeping track of this deduction during the tax year can be challenging. If you have a large medical bill in a given year, you may be distracted by the time and anxiety of dealing with an illness. This deduction is a good reason to have a CPA help you with your tax return. A tax professional can ask the right questions to help you maximize your deductions.

9. State and local taxes

You can deduct four types of nonbusiness taxes on your personal tax return:

  • State, local, and foreign income taxes
  • State and local general sales taxes
  • State and local real estate taxes, and
  • State and local personal property taxes

You can elect to deduct state and local general sales taxes instead of state and local income taxes, but you can’t deduct both. Most taxpayers choose to deduct income taxes because the dollar amount is larger.

Your deduction of state and local income, sales, and property taxes is limited to a combined total deduction of $10,000 ($5,000 if married filing separately).

This is the most important tax law change for taxpayers who live in a state with a high state tax rate. Because state and local taxes are now limited, some taxpayers will have much larger tax liabilities in 2018.

10. 401(k) matching contributions

This topic is not a tax deduction—but it’s a tax strategy that can make a huge difference in the number of retirement dollars you accumulate over time.

Two types of retirement plans were mentioned earlier, and many employer-sponsored retirement plans offer an employer matching contribution. The most widely used company plan as a 401(k). If your employer offers a matching contribution, take full advantage of the benefit.

Here’s an example. Assume that your company offers a 3% match on 401(k) retirement plan contributions. You decide to contribute 3% of your annual salary, or $1,800. Keep in mind that the dollars are contributed pre-tax, meaning that 100% of the $1,800 you earn is invested.

Since you contributed 3%, your employer invests another $1,800. You now have $3,600 invested, and you don’t pay taxes on the earnings until you start to withdraw funds in retirement.

It may be the most valuable tax strategy available to you.

Take control of your tax deductions

Preparing to file your taxes can be time-consuming, but getting the most out of your available tax deductions will save you money. Use this list of tax deductions and keep detailed records during the tax year. Consider working with an experienced tax preparer who can help you file your taxes accurately.

If you put in the effort to organize your records and understand your available deductions, you can save tens of thousands of dollars over time, and you can avoid penalties and fees. You got this.

Ken Boyd

Ken Boyd is the Co-Founder of, and owns St. Louis Test Preparation ( He provides blogs, videos and speaking services on accounting and finance. Ken is the author of four Dummies books, including Cost Accounting for Dummies. Read more