The mortgage industry is debating whether to move away from the long-standing TriMerge credit reporting standard. Wendy Hannah-Olson of Equifax speaks with mathematician and behavioral modeling researcher Joni Baker at Andrew Davidson & Company about new research analyzing credit score differences across the three credit bureaus. Their discussion reveals how shifting to single or bi-merge credit reports could affect loan qualification, mortgage pricing, and risk—potentially costing consumers thousands of dollars and reshaping how lenders evaluate credit.

In this episode:

Why are lenders debating moving away from the TriMerge credit report?

Some policymakers and industry groups are exploring whether using a single credit report or a bi-merge report could reduce costs and streamline the mortgage process. However, new research suggests that using fewer credit reports may introduce pricing uncertainty, increase risk, and lead to inconsistent loan qualification outcomes.

How different can credit scores be between the three credit bureaus?

According to a recent study from Andrew Davidson & Company, credit scores across bureaus can differ significantly. In the data analyzed, 27% of consumers had score differences of at least 10 points between bureaus, 14% had differences of 20 points or more, and nearly 1 in 10 had differences of 30 points or more.

How could moving away from TriMerge affect mortgage pricing?

If lenders rely on a single credit score instead of the TriMerge median, borrowers could move between pricing tiers more frequently. In some scenarios, a change of just 10–20 credit score points could alter loan pricing, potentially affecting mortgage costs by $3,000 to $5,000 or more over the life of a loan.