The Tax on Your Salary - 2011-12. On January 9th 1799 the Prime Minister, William Pitt, introduced income tax to pay for the Napoleonic war at the swingeing rate of 0.83% for people earning Â£60 or more.
Basically, an ARM is a mortgage loan that has an interest rate that adjusts, or changes, usually once a year. The benefit of an ARM is that it generally gives you a lower interest rate initially. The risk is that the interest rate most likely will go up, which in turn will make your monthly payments rise.
ARM Margin. DEFINITION of 'ARM Margin'. A fixed percentage rate that is added to an index value to determine the fully indexed interest rate of an adjustable rate mortgage (ARM). The margin is constant throughout the life of the mortgage, while the index value is variable.