If you’re self-employed, you have several options for a retirement savings plan. The “best” plan for you depends on how much you want to save and whether your business has employees. The IRS publishes a pamphlet with a great overview, so I’ll just review the highlights.
Plans for everyone: the IRA and the Roth IRA
Contributions to a traditional or Roth IRA are limited to $5,000/year or to your earned income, whichever is less. If you’re over 50, you can put in an extra $1,000. Money put into a Roth IRA is post-tax, but withdrawals after age 59 1/2 are tax-free. Money put into a traditional IRA can be tax-deferred, subject to income limits, but growth and pre-tax contributions are taxed when withdrawn.
An employer can set up employee IRA accounts which can be funded through payroll deduction.
Best Reference: IRS Publication 590 — Individual Retirement Arrangements
SEP’s and SIMPLE’s
The Simplified Employee Pension (SEP) allows the self-employed person to sock away more money — 25% of net earnings, up to a maximum contribution of $49,000. An employer can also contribute directly to a SEP for employees.

How do I figure out whether I’m saving enough for retirement? What’s the impact of one bad year in the stock market? How much can inflation erode my nest egg?
There are three types of retirement investment accounts for employees: 401(k), Roth IRA, and the traditional IRA.
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