US Default Risk Assessed Through Tax Day Revenue.

The US Treasury's tax receipts this week will give a clearer idea of how much cash it will have on hand as it approaches the limits imposed by the $31.4 trillion cap that will prevent it from borrowing. The estimates for the so-called drop-dead date are wide, but investors and officials are hoping they will have a better idea soon. The narrowing window for negotiations is likely to become an increased focus for lawmakers in the coming weeks.