The following tables detail the activity related to the allowance for credit losses for trade receivables by portfolio segment (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | CoStar | | Information Services | | Multifamily | | LoopNet | | Other Revenues | | Total | Beginning balance at December 31, 2024 | $ | 6.1 | | | $ | 3.9 | | | $ | 9.4 | | | $ | 3.0 | | | $ | 0.4 | | | $ | 22.8 | | Current-period provision for expected credit losses | 6.8 | | | 0.6 | | | 6.5 | | | 2.0 | | | 1.0 | | | 16.9 | | Write-offs charged against the allowance | (5.2) | | | (1.0) | | | (5.0) | | | (1.6) | | | 0.3 | | | (12.5) | | Ending balance at June 30, 2025 | $ | 7.7 | | | $ | 3.5 | | | $ | 10.9 | | | $ | 3.4 | | | $ | 1.7 | | | $ | 27.2 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2024 | | CoStar | | Information Services | | Multifamily | | LoopNet | | Other Revenues | | Total | | Beginning balance at December 31, 2023 | $ | 9.7 | | | $ | 2.5 | | | $ | 7.3 | | | $ | 2.7 | | | $ | 1.0 | | | $ | 23.2 | | | Current-period provision for expected credit losses | 7.1 | | | 0.7 | | | 6.5 | | | 2.5 | | | 0.2 | | | 17.0 | | | Write-offs charged against the allowance | (9.5) | | | (0.7) | | | (4.8) | | | (2.9) | | | 0.1 | | | (17.8) | | | Ending balance at June 30, 2024 | $ | 7.3 | | | $ | 2.5 | | | $ | 9.0 | | | $ | 2.3 | | | $ | 1.3 | | | $ | 22.4 | | |
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