The information on this page is only for educational purposes. NerdWallet doesn't recommend or advise investors to buy or sell securities or other investments.

Staying in the workforce is something to understand.

You may be able to delay Medicare enrollment

If you still work at 65 and have access to health benefits through your employer, you may be able to delay signing up for Medicare. If your company has less than 20 employees, you should sign up for Medicare, but if it has more than 20, you can put it off.

If you have the choice, compare what you would pay for group benefits with what you would pay for Medicare. "If the group coverage is less, then it may make sense to not get Part B and wait until you retire," says Julie Hall, a certified financial planners. Part A is free for most people so there is no reason to delay it.

If your employer requires you to enroll in Medicare, contact your benefits department first.

Do I need to sign up for Medicare if I am still working?

An HSA and Medicare don’t mix

If you have a high-deductible health plan with a health savings account, you can't save to it once you enroll in Medicare. If you have access to employer benefits that allow you to delay Medicare, it is worth considering your options if you want to save for your golden years.

The fact that money can be saved pretax, grow tax-free and be withdrawn pretax to pay for eligible medical expenses is a triple tax benefit.

If you want to save to an IRA, you have to delay Social Security benefits because you will have to enroll in Medicare Part A when you reach 65. Both you and your employer should stop contributions at least six months before you apply for Medicare to avoid taxes.

Do you think I should invest outside of the U.S.

Your earnings affect your Social Security payments

Social Security benefits can be affected by your income during the last few years of your working life.

For every $2 you make over $19,560, your Social Security benefits will be reduced. When you reach your full retirement age, your benefits are reduced by $1 for every $3 you earn over $51,960 up to the month before. There is no benefit reduction once you reach full retirement age.

Your Social Security benefits could be taxed. If you file a tax return with a combined income of more than $25,000 you will pay taxes on up to 85% of your social security benefits. Social Security defines combined income as the total of your adjusted gross income, non taxable interest and half of your Social Security benefits.

A lot of income can get people to pay tax on a portion of their Social Security.

4 ways to help recession-proof your retirement savings are also included.

Your income affects your Medicare premiums

The income-related monthly adjustment amount is known as IRMAA. Your premiums will go up if you earn more.

If your modified adjusted gross income was more than $91,000 as a single tax filer or more than $182,000 as a married couple, you will pay more for Part B and Part D. Experts recommend that you factor in the extra costs into your work plan.

People might say, "I'll work, but I can only make so much money." It is important to be careful with the IRMAA.

NerdWallet has more information.

Kate Ashford is a writer. Send an email to kashford@nerdwallet.com Kate Ashford has a verified account on the social networking site.