Mark May 2 on your calendars. That’s when the first of nearly 130 economic stimulus payments will arrive in taxpayers’ bank accounts.

The IRS has scheduled the payments in two waves — one for taxpayers who chose to receive their 2007 tax refunds via direct deposit, and one for those who prefer paper checks. Check out the complete schedules here.

The first round of payments will be completed by early July.

The IRS has also developed an online calculator to help taxpayers determine how much they’ll receive. Be forewarned: You’ll need your 2007 Form 1040, Form 1040EZ or Form 1040A in hand if you want to use the calculator.

In other stimulus payment news:

• IRS encourages stimulus outreach to low-income workers
• Stimulus payment packages go to Social Security, Veterans recipients

What do you think: Are these payments enough to help stimulate the economy?