What do you do if you are loaded down with credit card debt but you know you should be saving for retirement? Do you concentrate on getting rid of the debt, and put off saving in the 401(k) or IRA for later? Or do you save now, pay off later?

There are two different answers to this quandary: One may make you feel better and perhaps move you further in the long run because you will have a sense of accomplishment along the way. The other is actually the best answer, but will work only if you are disciplined about getting rid of credit card debt.

So here goes the possible feel-good approach: Given the rigors of saving for retirement late in life, I suggest young people combine getting rid of credit cards with some retirement saving at the same time.

That way you move yourself along on your debts and on your saving, and - best of all - you begin enjoying a delightful reward: You start seeing your savings build up and begin to imagine spending retirement comfortably instead of sitting in your La-Z-Boy without cable TV.

Simply consider the difference between a 20-year-old who saves a little each week, and a 45-year-old with nothing saved. If the 20-year-old invests just $20 a week in a stock market mutual fund in a 401(k) or an individual retirement account, that account can end up with $1 million at retirement if the stock market performs the way it has historically.

At 45, a person who has saved nothing will need to save about $245 a week to end up in the same place as the person who started saving $20 at age 20. For the illustration, I assumed both average 10 percent annually on investments. That's the average in the last 86 years, although too high for the last decade.

Yet research by David Blanchett shows that there is a better way. Blanchett is head of retirement research for Morningstar and recently completed an analysis looking purely at the numbers.

He found that if you can focus on what's best for you in the long run and tackle those credit card debts until you have wiped them out, you can then save for retirement with better results. His calculations show that you can potentially increase your 401(k) balance by 14.1 percent over the person who just made minimum payments on credit cards while also saving for retirement.

For his analysis, Blanchett assumed a person had $400 a month that could be used either for credit card payments, the 401(k) or both. He found that a 30-year-old with $15,000 in credit card debt who simply paid the minimum on the cards wouldn't get rid of the debt for 36.6 years. In other words, the person would finally be debt-free five months before retiring at age 67.

Link:
Personal Finance: Paying debt vs. funding retirement