Deep-dive library

Cash-flow underwriting is already used in bank, CDFI, merchant and mortgage workflows. This expanded review maps adopters and motives, separates historical adoption statistics from live coverage, examines predictive and adverse evidence, and explains affordability, operational, economic and governance risks.

Version note: Clarified that ParaFormer runs daily and produces monthly sales forecasts.

A loan modification changes the repayment contract, but a lower payment is only one measure of success. Durable recovery depends on cash flow, the new maturity profile, credible loss recognition and performance after relief ends.

Nonaccrual status separates collecting money from earning interest for reporting purposes. It is a judgment about collectibility, not a synonym for delinquency, a charge-off or the disappearance of the borrower’s legal obligation.

Loan risk ratings describe the strength of repayment and the severity of weaknesses. Their meaning depends on consistent definitions, timely migration and the distinction between borrower risk, facility protection, accounting loss and payment status.

Why population stability, predictive accuracy and business performance must be evaluated separately across lending, fraud, service and forecasting.

Version note: Expanded beyond credit-model oversight to service and financial forecasts, with an operational-error example and a clearer distinction between data drift and outcome deterioration.

Why net losses can improve while new defaults worsen, and how recovery costs, timing and borrower outcomes change the interpretation.

Version note: Expanded the article from underwriting signals to servicing economics, recovery cash timing and durable borrower resolution, with a net-collection example.

How missing repayment outcomes affect lending expansion, customer access and claims that a model can approve more people safely.

Version note: Connected the statistical problem to product design and access, added the economics of obtaining evidence, and linked an accessible primary-paper copy.

How delinquency migration reveals changing customer needs, servicing workload and portfolio performance that an ending ratio can conceal.

Version note: Added durable customer-resolution measures and service-capacity economics while preserving the transition matrix and cure definitions.

How comparable cohorts improve the interpretation of loan losses and can also organize customer retention, servicing costs and product economics.

Version note: Expanded beyond credit-loss surveillance to cohort contribution and customer retention while preserving loan-seasoning definitions and denominator examples.

Credit-loss allowances, provision expense and charge-offs describe different stages of an economic loss. Read them together with loan growth, asset classification and expected collections to understand financial results.

Version note: Broadened CECL from loan pricing to financial-statement interpretation; added scope distinctions, a matched charge-off example and an explanation of why the allowance is not a segregated cash fund.

Prepayments change borrower costs, investor cash flows, lender reinvestment and servicing revenue. The same refinancing wave can benefit one part of the mortgage and lending market while pressuring another.

Version note: Added the borrower’s refinancing calculation, a comparison of origination, investment and servicing exposures, and broader interpretation of prepayment behavior beyond installment-loan yield.