uncollected

The Biden administration estimates that nearly $700 billion per year of tax revenue that is owed to the federal government goes uncollected.

Figures suggest there is £500m of uncollected public debt each year, adding to councils' strained finances.

The healthcare facilities owner said it will accelerate efforts to recover uncollected rents from tenant Steward Health Care System.

At shopping centers bustling with activity, flies crawl over heaps of uncollected trash.

They never interviewed key witnesses and failed to obtain a search warrant, leaving evidence uncollected.