A mortgage standard variable rate is the interest rate that you will usually revert to when your current mortgage deal ends.
A standard variable rate payment can change at any point in line with a lenders variable rate.
You will usually pay more on your mortgage payment when it reverts to the standard variable rate.
Below is a simple standard variable rate payment calculator so that you can see how much your mortgage payment would be on svr;
Click here to find out your lenders standard variable rate
