set aside billion of dollars for future defaults have also tightened their standards, often requiring higher credit scores, heftier down payments and more documentation. Some, such as Wells Fargo and Chase, have temporarily eliminated home equity lines of credit, while Wells Fargo also stopped cash-out refinancing.

It’s not unusual for lenders to tighten the credit reins during a downturn, but the current situation has made it especially challenging for them to get an accurate read on consumers’ financial health. Borrowers have been able to pause mortgages, halt student loan payments and delay paying their tax bills, while millions of households have received an extra $600 weekly in unemployment benefits. Those forms of government support could be masking an underlying condition.

“It makes it hard for a lender to understand what the consumer’s true state of credit quality is and their ability to pay back a loan,” said Peter Maynard, senior vice president of global data and analytics at the Equifax credit bureau.

Credit card companies, for example, mailed out 57 million offers to consumers in June, a historic low and down from 272 million a year earlier, according to Mintel, a research firm that has been tracking the offers since 1999. Some banks have stopped offering the types of cards that attract people who may be focused on paying down debt, such as BankAmericard, Mintel found.

Issuers are also being careful with cards belonging to current customers, said Mark Miller, associate director of insights for payments at Mintel.