The Federal Reserve has wrapped up 2018 with a key interest rate hike, the fourth such increase this year and another dent in the wallets of American borrowers.

Savers, on the other hand, will earn slightly more on the money in their bank accounts.

Interest rates on credit cards, adjustable-rate mortgages, home equity lines of credit and some student loans are likely to rise, experts say, increasing borrowers’ monthly payments. All have variable rates that directly respond to the Fed’s move.

Loans with longer fixed-rate terms don’t follow in lock-step with the Fed rate hikes, but generally and gradually move in the same direction.

The Fed lifted its benchmark short-term rate by a quarter percentage point to a range of 2.25 percent to 2.5 percent. It’s the ninth bump-up of the key rate since late 2015.