With money tighter than it's been in decades, we can use every penny we can get out of our tax returns. Yet a fortune is left on the table every year.

Let's put an end to that. I've compiled a list of deductions, credits and strategies that could help.

Find yourself below and watch your savings add up.

You are not making as much as you used to. Your lower income could allow you to convert to a Roth Individual Retirement Account from a traditional IRA. The rules say you can only convert if your adjusted gross income is less than $100,000 (you have until the filing deadline to do it).

The benefits can be huge. Say you're 50 and the value of your IRA has plunged. You could let the money stay in the account, wait for it to rebound—as we know it will eventually—and grow until you're 70 1/2 and are forced to take distributions at your current tax rate.

Or, you could pay taxes now at your current rate (which is lower if you didn't have an especially profitable year), and never pay taxes on the money again. If you prefer, you don't have to convert your entire IRA. One downside to a conversion: You can't touch the Roth money for five years.

You own a business. You may have fallen into the trap of thinking money from selling one day is your retirement kitty. Big mistake, said Barbara Weltman, author of J.K. Lasser's 1001 Deductions and Tax Breaks 2008.

"You may be so critical that there is no business without you. Plus, you are missing a huge opportunity to shelter income in one of several retirement accounts," Weltman said. There are several options. A defined benefit plan—a self-funded pension—will pay you income in retirement.

A solo 401(k) is another good choice. Keogh plans (if you have employees) and Simplified Employee Pension plans (if you don't) are also on the menu, but at the very, very least you should put $5,000 into an IRA or a Roth.


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