3 Proven Ways to Boost Your Retirement Income

Who says you have to live on a fixed income in retirement? Sure, your Social Security checks might be fixed for each year, but they're likely to be increased at least a little in many or most years, to account for inflation.

There are lots of other ways that your retirement income can increase -- often with you making it happen. Here's a look at three things that you can do to boost your retirement income.

Two hands are shown, writing the words more income on an index card.
Two hands are shown, writing the words more income on an index card.

Image source: Getty Images.

No. 1: Save more aggressively, and invest effectively

First, a perhaps-obvious strategy: Sock away more money and be sure you're investing it effectively. You might think that, say, $5,000 per year in your retirement account is enough, but unless you've run the numbers, you may be undersaving by a lot. Much depends, too, on how long you'll be investing for. The earlier you start, the less painful it will likely be. Check out the tables below. The first one shows the power of starting early.

Growing at 8% For

$10,000 Invested Annually

20 years

$494,229

21 years

$544,568

22 years

$598,933

23 years

$657,648

24 years

$721,059

25 years

$789,544

26 years

$863,508

27 years

$943,388

28 years

$1.0 million

29 years

$1.1 million

30 years

$1.2 million

Calculations by author.

Imagine that you're about 25 years from retiring, but you put off starting to save and invest in earnest for five years. Now look at the table above, and you'll see that if you were socking away $10,000 annually, you'd have amassed nearly $500,000 over the 20 years, but had your money had 25 years to grow, you'd have nearly $790,000 -- $290,000 more!

Next, think about how much you can manage to save and invest annually. The next table shows what a difference there is between different savings rates:

Growing at 8% For

$5,000 Invested Annually

$10,000 Invested Annually

$15,000 Invested Annually

10 years

$78,227

$156,455

$234,682

15 years

$146,621

$293,243

$439,864

20 years

$247,115

$494,229

$741,344

25 years

$394,772

$789,544

$1.2 million

30 years

$611,729

$1.2 million

$1.8 million

Calculations by author.

Finally, note that the tables above assume an 8% annual growth rate. Over many decades, the stock market has averaged annual gains of close to 10%, but you can't expect that, so an 8% rate is a more conservative assumption. Be sure you're aiming for solid returns in your investments, such as those you could get over the long term from a simple, low-fee broad-market index fund. You might average 10% with that, or if you add some carefully chosen individual stocks to your portfolio, that might juice your returns. The table below illustrates what a difference your money's growth rate can make, showing what annual investments of $10,000 can grow to: