Paying your mortgage off will make you completely debt free.

You want to reduce expenses as much as possible so you can put more money into your retirement fund.

You live a country, such as Canada, where you do not receive a tax break because you carry a mortgage.

You plan to move in a few years and will need cash for your next home - for closing costs or for a down payment. Applying more money towards your mortgage balance will increase equity, which can be converted to cash if needed.

Currently, you do not receive a tax break on your mortgage interest. If your mortgage is small, your interest may not exceed the standard deduction the IRS gives non-itemizing taxpayers. Without that tax break, the actual cost of your mortgage is higher.

You pay private mortgage insurance (PMI). If you have less than 20 percent of equity in your home, making extra payments will build more equity sooner, allowing you to cancel your PMI. And eliminating PMI will reduce your monthly payments.

But for some people, paying your mortgage off early can hurt you more than help you. Here are reasons to forego pre-paying your mortgage:

Your mortgage contract includes prepayment penalties.

You have other high-cost debts. Credit card interest rates are often more than twice that of most home mortgages. Any extra cash should go toward paying off the balance of those first.

You want more money in your pocket now.
You are in a high tax bracket and this additional deduction would lower your income tax bracket as well as your taxes.