Post-Tax Deductions Boost Savings for Future

Post-Tax Deductions: Boost Savings for Future

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Ms. Frances Dang is a visionary CPA, Partner at XOATAX, and a Tax Expert for many high-net-worth clients and corporations. She specializes in both minimizing tax liabilities and driving sustainable growth. Over 7 years of dedicated service, Ms. Frances has provided personalized planning for high-net-worth clients including business owners, investors, and entrepreneurs spanning manufacturing, e-commerce, biotechnology, fintech, services, and non-profit sectors. 
Kevin Zhang renowned CPA and Tax Expert with over 15 years working in tax planning and financial optimization for individuals and large businesses. He excels in analytical abilities and innovative problem-solving, identifying tax minimization opportunities, and providing strategic recommendations to leadership teams.
Hoang Tran  is an accomplished CPA and financial advisor with over 8 years of experience. He specializes in providing tailored financial solutions, tax optimization, and strategic guidance to individuals and businesses. With a client-centric philosophy and a commitment to continuous learning, Hoang has earned a reputation as a trusted expert in personalized financial strategy. His expertise has helped businesses across diverse industries, including manufacturing, import & export, and wholesale & distribution, achieve their financial success.

From healthcare to retirement planning, many everyday activities can strain our finances. While traditional tax deductions can help alleviate some burdens, post-tax deductions can also provide significant savings opportunities.

In this post, we’ll delve into post-tax deductions, explain how they work, and provide examples of deductions that can help you achieve your financial goals.

Let’s get started!

Key Takeaways

  • After calculating federal income tax, state income tax, FICA taxes, and any other payroll deductions, post-tax deductions are made. It is not tax-deductible, meaning they do not reduce the employee’s taxable income.
  • The difference between pre-tax and post-tax deductions is that pre-tax deductions are taken out of your paycheck before taxes are calculated, while after-tax deductions are taken after taxes have been withheld.
  • You must first subtract pre-tax deductions from your net pay to calculate your net pay. Then, subtract applicable tax withheld (federal, state, and local) and applicable post-tax deductions. Finally, add back any reimbursements to get to net pay.
post tax deductions

What is a post-tax deduction?

Post-tax deduction, also after-tax deduction, refers to any deductions made from an employee’s paycheck after all required taxes (federal, state, and local) have been withheld. These deductions can be mandatory, such as wage garnishments, or voluntary, such as after-tax retirement contributions or charitable donations.

What are the types of post-tax deductions?

There are various types of post-tax deductions. Some of the most common include

Wage garnishments

One of the most common post-tax deductions is wage garnishments. If the courts have ordered you, regulatory agencies, or the IRS to pay child support, alimony, student loan payments, or back taxes, part of your paycheck will be withheld and sent to the appropriate agency or person.

Retirement contributions

Another type of post-tax deduction is retirement contributions. Although 401(k)s and IRAs are usually considered pre-tax contributions, many employers offer after-tax contributions such as Roth IRAs or Roth 401 (k)s that can lower your tax burden in the long run.

Roth IRA

With a Roth IRA, you make contributions with after-tax dollars, meaning you pay taxes on the money you contribute upfront. However, when you withdraw funds in retirement, those funds are tax-free.

Discover how you can take advantage of a Roth IRAs account.

Roth 401(k)

Unlike traditional 401(k) plans, contributions to a Roth 401(k) are made with after-tax dollars. Additionally, Roth 401(k) plans don’t have income limits like Roth IRAs, making them a popular choice for high-earning individuals who want to maximize their retirement savings.

Life insurance deductions

Life insurance premiums are another after-tax deduction (optional deduction) type. You can set up a group term life insurance and have premiums deducted from your paycheck after withholding taxes.

Other post-tax benefits

Finally, you may also be able to take advantage of post-tax benefit contributions such as:

  • Disability insurance: It can be either pre-tax or after-tax deductions, depending on how the policy is structured and how the premiums are paid.
  • Charitable contributions: If an employee makes charitable contributions, they can choose to make those contributions post-tax.
  • Voluntary contributions: Employers may offer employees the opportunity to contribute voluntarily to specific programs, such as a company charity. These contributions are often made post-tax.
  • Union dues: Union dues are often deducted from an employee’s paycheck post-tax.
  • Employee Stock Purchase Plans (ESPPs): ESPPs allow employees to purchase company stock at a discounted price. While the discount on the stock purchase is typically considered taxable income, the contributions to the plan are made with after-tax dollars.
post tax benefits

What is the difference between pre-tax and after-tax deductions?

As we all know, deductions can be a great way to lower your tax bill. But did you know the difference between pre-tax and post-tax deductions?

The main difference between pre-tax and after-tax deductions is when the deduction is taken from an employee’s paycheck and how it affects their taxable income and tax liability.

Pre-tax deductions are taken from an employee’s gross pay before taxes are calculated, while after-tax deductions are taken from an employee’s net pay after taxes have been estimated.

So which type of deduction is better?

Whether pre-tax or after-tax deductions are better depends on the employee’s financial goals and tax situation. Here are some factors to consider when deciding which type of deduction may be better:

#1: Financial goals

An employee’s financial goals, such as retirement savings or paying off debt, may also affect the decision.

#2: Deductions available

Not all deductions are as available or optional to you as you want. For example, some deductions, such as wage garnishments, are only available post-tax and are mandatory.

#3: Tax bracket

Pre-tax contributions benefit employees in higher tax brackets, as the reduction in taxable income can result in significant tax savings.

On the other hand, after-tax deductions benefit employees in lower tax brackets more since the tax savings from these deductions are minimal.

How to Calculate Net Pay from Post-Tax Deductions

Calculating post-tax deductions might seem daunting, but it’s a straightforward process. Here are the steps to follow:

Step 1: Determine gross pay

The first step is determining your gross pay and total earnings before making any deductions.

Step 2: Subtract pre-tax deductions (if any)

If you have any pre-tax deductions, such as health insurance premiums or contributions to a 401(k), subtract them from your gross pay.

Step 3: Subtract payroll taxes (federal, state, and local)

Once you’ve deducted pre-tax withholdings from the gross pay, you need to deduct the payroll taxes.

For the 2023 tax year, the payroll taxes withheld for an employee include the following:

  • Federal Withholding
  • FICA taxes: Social Security tax (6.2%) and Medicare tax (1.45%), Additional Medicare (0.9% for employee wages exceeding $200,000)
  • State and local income taxes
  • State unemployment taxes (SUTA) (only in some states)

Step 4: Subtract post-tax deductions (such as after-tax retirement contributions, wage garnishments, or voluntary deductions)

Subtract any post-tax deductions from your paycheck. These may include after-tax retirement contributions, wage garnishments, or voluntary deductions such as charitable donations.

Step 5: Calculate net pay

To calculate net pay, subtract the total taxes and other deductions from gross pay. The resulting amount is the employee’s net pay or take-home pay.


Assuming you receive a weekly gross pay of $1,000 from your employers. Also, assume that you will deduct 10% from your gross pay to contribute to your Health Insurance plan.

Here is how you calculate your net pay:

Gross Pay: $1,000

  • Health Insurance: $100

Adjusted gross pay = $900

  • Federal Withholding: assuming $50
  • FICA Taxes: $900 x (6.2% + 1.45%) = $68.85
  • State and local taxes: assuming $35
  • Contribution to Roth IRA: assuming $100

Net Pay = $646.15

Final Thoughts

In conclusion, post-tax deductions can be valuable for achieving your financial goals and reducing your tax burden. From retirement contributions to life insurance premiums, there are various types of post-tax deductions that you can take advantage of.

When deciding which type of deduction is better, consider your financial goals, available deductions, and tax bracket.

Now that you understand how post-tax deductions work and how to calculate your net pay, you can make informed decisions about your finances.

If you found this information helpful, subscribe to our blog for more financial tips and insights. By subscribing, you’ll stay up-to-date with the latest trends and strategies to help you achieve financial freedom. Start saving for your future today!

Frequently Asked Questions (FAQs)

Can you deduct post-tax contributions?

No, you cannot deduct post-tax contributions on your tax return. However, when you withdraw funds from a Roth IRA or a Roth 401(k), those funds are tax-free.

What are post-tax deductions on payslips?

After calculating taxes, post-tax deductions on a payslip are taken out of your paycheck. Post-tax assumptions include

  • Voluntary after-tax contributions to a retirement account.
  • After-tax deductions for life insurance premiums.
  • After-tax contributions to a health savings account.

What is pay after deduction?

Pay after deduction refers to the amount of money you take home after all your payroll deductions have been taken out of your paycheck. This includes both pre-tax and post-tax deductions.

Is salary pre-tax or post-tax?

Your salary is considered pre-tax because it is the amount you earn before any taxes have been taken out. However, your take-home pay will be less than your salary because of payroll deductions, including pre-tax and post-tax deductions.

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