88.5% chance borrowing costs go up a little

88.5% chance the Fed, America's central bank, lifts its key rate by a quarter point, 25 basis points or just 0.25%, to 3.75%-4.00% at its September 15-16 meeting, Reuters reported. That would make borrowing costlier, up from 3.50%-3.75%. This is what investors expect, not a done decision.