Ok, I just wrote a (typically) long winded article about this, for the full version visit How Your Monthly Mortgage Payment Can Adjust Even With A Fixed Rate Mortgage but thought I'd post a brief version here on Active Rain too.
Yes, even with a fixed rate home mortgage it's still possible for your monthly payment to change in the future. While the principal and interest portions will stay the same (amt toward interest goes down, principal goes up but they remain the same combined amt each month) if you have an escrow account with your home loan it IS possible for that to change and affect the amount you owe each month for your mortgage payment.
The most common change that causes a mortgage payment to adjust is the ever-popular real estate tax! Things like city/countywide property tax rate changes, property tax value reassessments (Charlotte's is due in 2010), and improvements or changes to the house itself can shift and change the amount of annual real estate taxes for a home in Charlotte NC.
Escrow accounts are typically reviewed annually, and any shortfall can trigger a change in monthly payment to make sure there's enough in the escrow account to pay the property taxes and home insurance when they come due since those bills are paid from funds reserved in that escrow account.
All in all, it's just one more really good reason that it's important for home buyers to not only have reserves before buying a home but AFTER buying that home as well.
For the full article plus a local Charlotte NC real estate consideration for home buyers (annexation into the city limits), visit How Your Monthly Mortgage Payment Can Adjust Even With A Fixed Rate Mortgage.
Thanks for reading :)
This can be a real shocker to people. My personal mortgage payment has changed quite a bit in 2 years.