Know the limits
Add when a late fee starts, how much it is, and when the bill would go delinquent. A fee can be a dollar amount, a percent of the bill, or both, whichever is more. The bill keeps its real due date.
When money is tight
Some bills can slip a few days without trouble, and some cannot. Can It Wait? keeps those limits on the bill, so moving a payment is a choice you make with the facts in front of you.

Add when a late fee starts, how much it is, and when the bill would go delinquent. A fee can be a dollar amount, a percent of the bill, or both, whichever is more. The bill keeps its real due date.
When a Bill Sheet runs short, OurBills can suggest a later pay day that avoids the fee. Nothing moves until you choose it.
Adjust (on every plan) lets you try moving, splitting, or paying bills later and see the new amounts before anything is saved. When a Bill Sheet goes below $0 it becomes Cover the Gap and points to the bills that can wait, fee-free moves first.