Which of the following is NOT considered acceptable evidence of repayment ability?

A signed letter from Gabbie's father promising emergency financial support is not considered acceptable evidence of repayment ability because it is not a reliable or verifiable source of income. Such a letter may indicate potential financial assistance, but it does not demonstrate a borrower's actual income or ability to repay a loan. Loan underwriting processes require concrete proof of income and financial stability through documented sources that reflect the borrower's true financial situation.

In contrast, bank statements from the last three months, pay stubs from the last four weeks, and tax returns from the previous year provide strong evidence of income and financial health. Bank statements show actual deposits and account balances, pay stubs represent current earnings from employment, and tax returns reflect annual income and financial history, all of which are essential in assessing a borrower's repayment ability.