One thing that a lot of people don't talk about when they are discussing refinancing their mortgage is the break even period. This is an important concept that does need to be discussed. The main reason that it is not is that calculating it is not easy. Nevertheless you should have a reasonable idea of what it would be before you refinance.
If you are thinking about refinancing your home you have to keep the break even period in mind. This is basically a calculation that tells you how long you would have to pay your new mortgage in order to make it worth the cost of refinancing. This assumes of course that you are refinancing for the purposes of saving money, if you are doing it for a different reason this will not be relevant since you are almost certainly going to be losing money anyway.
When you refinance a mortgage you are going to have to pay several fees both to get the new mortgage and to get out of the old one. These fees will add up to be several thousand dollars in most cases. This is why you have to aware of the break even period, you want it money that you spend to be a good investment. If you are refinancing to get a lower interest rate you are going to want to calculate how much you save each month with the new mortgage. It is then a simple matter to determine how long you would have to continue with that mortgage in order for the savings to equal what it cost you to refinance, this is the break even point.
The calculation above was fairly simple but in most cases things will be more complicated. The biggest reason is that in the calculation we assumed that you would be taking a mortgage that would be paid off in the same amount of time. This may or may not be the case in reality. If you are going to be taking longer to pay off the mortgage you will end up spending substantially more and in all likelihood won't have a break even point. On the other hand if you are reducing the time that it takes to pay off the mortgage you will save money even if your monthly payments are higher.
The calculations get even more complicated when you start to factor in things like the tax savings, private mortgage insurance and everything else that goes with a mortgage. The key point is to make sure that the total amount that you would pay on your mortgage will be less than the amount that it cost you to refinance. You also have to keep in mind questions of how long you would have to stay in the house to have made the refinance worthwhile. In most cases it will be best to talk to an expert to help you with the since the calculations can be very complicated.