Capitalization is also the practice of adding unpaid interest charges to the principal balance of a loan, thereby increasing the size of the loan. Interest is then charged on the new balance, including both the unpaid principal and the accrued interest. Capitalizing the interest increases the monthly payment and the amount of money you will eventually have to repay. If you can afford to pay the interest as it accrues, you are better off not capitalizing it. Capitalization is sometimes called compounding.

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