) -- Building credit is job one for consumers -- even for the estimated 50 million people deemed

"credit invisible"

by creditors and lenders.

But traditional

credit scoring

models don't fully take into account some of the most basic bill-payment responsibilities of Americans, especially rent and utility bills.

In June a bipartisan bill in the U.S. House of Representative sponsored by Democrat Keith Ellison of Minnesota and Republican Michael Fitzpatrick of Pennsylvania proposed including some of those types of payments in consumer credit score calculations.

That bill, the

Credit Access and Inclusion Act

, seems to be gaining momentum in Congress, advocates say.

According to a release from Ellison and Fitzpatrick, so-called invisible credit consumers are subject to higher interest rates when seeking loans and credit and may even be forced to turn to pawn shops or payday loans, both of which can offer skyrocketing interest rates, to get the cash they need to pay their bills -- especially those uncounted

rental payments

and utility and phone bills.

Also see: For Some Reason, the Millennials Are Ready to Go Shopping>>

Credit ratings agencies such as


do accept rental payments in their credit calculation models, but usually only if the renter's property manager, landlord or a rental billing service's firm forwards payment data to the credit agency.

According to WilliamPaid

, which helps renters get payments applied to their credit history, 70% of U.S. apartment renters want their monthly home and utility payments to count toward their credit scores with no strings attached.

That's where the Credit Access and Inclusion Act may turn the tide, advocates say.

"The fact that it is in Congress is an important step by U.S. legislators to help millions and millions of Americans establish a payment history based on their recurring monthly expenses without having to take on debt," says Jeff Golding, chief executive at WilliamPaid.

The bill could be particularly useful to younger consumers, who typically have trouble establishing credit. "As with most 20-somethings, the only check they write is typically for rent," he says.

Also see: 4 Steps to a Solid Credit Score>>

That said, even if the bill passes Congress and is signed into law by President Barack Obama, younger and lower-income Americans who make up the lion's share of renters still have to keep their eyes on the prize when it comes to their

credit scores


"The most important thing is understanding credit scores and what impacts them," Golding explains. "Building a credit history takes time. If you don't have a solid financial history, you have to be especially careful not to overdraw your accounts or bounce checks. These actions will show potential lenders that you are not creditworthy."

Most importantly, he says, if you rent an apartment, make sure you pay your rent and utilities in full and on time.

While momentum builds for the CAIA to pass Congress, "invisible" credit consumers can set the stage for a healthier financial future by paying bills on time and avoiding payday loan and pawn shop interest rates.

That's a good plan for the short term as 50 million Americans wait for help from Washington to leverage their long-term credit strategies.