Most mortgages have the option to allow payments to be made on a weekly or bi-weekly basis. This option may be desirable for two reasons. The first is it can save you money as you can expect to pay off your mortgage about 4 years sooner. This can save you dramatically over the life of your mortgage. The other reason why these options are so popular is that if your employer pays you on a weekly or bi-weekly basis, you can simplify your budgeting by making the payment line up with the way you paid.