The saver’s credit score can knock as a lot as $1,000 or $2,000 off your federal earnings tax invoice, relying on whether or not you file a person or joint return. But many people don’t know this tax credit score exists. That’s proper: Lower than half of staff are conscious of the saver’s credit score, in accordance with a survey by the Transamerica Middle for Retirement Research. And even retirees would possibly be capable to qualify for…