SIMPLE plans really shine for self-employed business owners. Here’s why…

Self-employed business owners are able to contribute both as employee and employer, with both contributions made from self-employment earnings.

SIMPLEs calculate contributions in two steps:

1. Employee out-of-salary contribution
The limit on this “elective deferral” is $11,500 in 2011, after which it can rise further with the cost of living.

Catch-up. Owner-employees age 50 or over can make a further $2,500 deductible “catch-up” contribution as employee in 2011.

2. Employer “matching” contribution
The employer match equals a maximum of 3% of employee’s earnings.

Example: A 52-year-old owner-employee with self-employment earnings of $40,000 could contribute and deduct $11,500 as employee plus a further $2,500 employee catch-up contribution, plus $1,200 (3% of $40,000) employer match, or a total of $15,200.

SIMPLE plans are an excellent choice for home-based businesses and ideal for full-time employees or homemakers who make a modest income from a sideline business.

If living expenses are covered by your day job (or your spouse’s job), you would be free to put all of your sideline earnings, up to the ceiling, into SIMPLE retirement investments.

A Truly Simple Plan

A SIMPLE plan is easier to set up and operate than most other plans. Contributions go into an IRA you set up. Those familiar with IRA rules – in investment options, spousal rights, creditors’ rights – don’t have a lot new to learn.

Requirements for reporting to the IRS and other agencies are negligible. Your plan’s custodian, typically an investment institution, has the reporting duties. And the process for figuring the deductible contribution is a bit simpler than with other plans.

What’s Not So Good About SIMPLEs

Once self-employment earnings become significant however, other retirement plans may be more advantageous than a SIMPLE retirement plan.

Example: If you are under 50 with $50,000 of self-employment earnings in 2011, you could contribute $11,500 as employee to your SIMPLE plus a further 3% of $50,000 as an employer contribution, for a total of $13,000. In contrast, a Keogh 401(k) plan would allow a $25,500 contribution.

With $100,000 of earnings, it would be a total of $14,500 with a SIMPLE and $35,500 with a 401(k).

Because investments are through an IRA, you’re not in direct control. You must work through a financial or other institution acting as trustee or custodian, and you will in practice have fewer investment options than if you were your own trustee, as you would be in a Keogh.

It won’t work to set up the SIMPLE plan after a year ends and still get a deduction that year, as is allowed with Simplified Employee Pension Plans, or SEPs. Generally, to make a SIMPLE plan effective for a year, it must be set up by October 1 of that year. A later date is allowed where the business is started after October 1; here the SIMPLE must be set up as soon thereafter as administratively feasible.

If the SIMPLE plan is set up for a sideline business and you’re already vested in a 401(k) in another business or as an employee the total amount you can put into the SIMPLE and the 401(k) combined (in 2011) can’t be more than $16,500 or $21,500 if catch-up contributions are made to the 401(k) by someone age 50 or over.

So someone under age 50 who puts $8,000 in her 401(k) can’t put more than $8,500 in her SIMPLE in 2011. The same limit applies if you have a SIMPLE while also contributing as an employee to a 403(b) annuity (typically for government employees and teachers in public and private schools).

How to Get Started with a SIMPLE Plan

You can set up a SIMPLE account on your own, but most people turn to financial institutions.

SIMPLES are offered by the same financial institutions that offer IRAs and Keogh master plans.

You can expect the institution to give you a plan document and an adoption agreement. In the adoption agreement you will choose an “effective date” – the beginning date for payments out of salary or business earnings. That date can’t be later than October 1 of the year you adopt the plan, except for a business formed after October 1.

Another key document is the Salary Reduction Agreement, which briefly describes how money goes into your SIMPLE. You need such an agreement even if you pay yourself business profits rather than salary.

Printed guidance on operating the SIMPLE may also be provided. You will also be establishing a SIMPLE IRA account for yourself as participant.

Keoghs, SEPs, and SIMPLES Compared