Washington ? President Barack Obama signed into law Tuesday the largest government economic rescue plan in the nation’s history, a $787 billion package of spending, tax cuts and tax credits that’s designed to help pull the nation out of what’s becoming the worst downturn since the Great Depression.

The American Recovery and Reinvestment Act includes everything from money to refurbish public housing to incentives for energy conservation. The 1,000-page plan aims to create and preserve jobs, and also to accelerate the transformation of key economic sectors.

While the plan provides some benefits directly to individuals, the main way it’s intended to help Americans is to promote economic activity nationwide. However, individuals will benefit most once the economy resumes growth rather than from the stimulus itself.

Here are some answers to questions about what the stimulus plan might mean to taxpayers and consumers.

Will I get a tax rebate like last year?

No. Taxpayers won’t receive checks this year. This plan involves a payroll tax cut, where employers will withhold less in taxes, meaning there will be a modest bump up in take-home pay until an income threshold is met. The cap is $400 for single filers and $800 for joint filers whose adjusted gross income falls below $75,000 and $150,000, respectively.

What if I’m self-employed?

You must adjust your quarterly tax filings to capture this credit.

I don’t earn a lot. How else does the stimulus plan help me?

The stimulus plan includes a temporary expansion of the earned-income tax credit for families with three or more children, and it allows more low-income families to receive a refundable child tax credit this year and next. For recipients of food stamps, the dollar amount of this assistance will increase by 14 percent.

What about people who are disabled or living on their Social Security checks?

The Social Security Administration will be sending a one-time $250 “economic recovery payment” within 120 days for people in this category. Check the agency’s Web site, or AARP’s Web site, in the coming days for more detail.

I’ve lost my job. How does this help?

If you’re eligible for unemployment benefits this year, you no longer will have to pay federal taxes on the first $2,400 of these benefits. The bill also extends unemployment benefits that would’ve phased out in March through December, and it raises the average weekly benefit by $25 a week, to $325.