Do I pay a zero % loan before another to clear both loans faster?
At the moment, you are paying about $1,300 interest each month (£431k @ 3.625% / 12) on your mortgage and repaying capital at about $1,500 per month. Paying $11,000 off your mortgage would save you about $9,000 as it is reduces your balance by about seven monthly capital repayments: but you will only see this benefit at the end of the mortgage because you will pay it off seven months earlier. There is only about $1,000 interest remaining on your car loans. Paying the $11,000 off your interest free loan then paying extra agianst the interest bearing loan brings that down to $500 and paying it off your interest bearing loan brings it down to $200. Either way, both car loans would be finished by early 2018. In summary, if you use the $11,000 against your car loans, you will save $8,500-$8,800 less than paying it off the mortage, but you will have no car loans in one year rather than three. Google spreadsheet for calculations here.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Do I pay a zero % loan before another to clear both loans faster?

### Response:
At the moment, you are paying about $1,300 interest each month (£431k @ 3.625% / 12) on your mortgage and repaying capital at about $1,500 per month. Paying $11,000 off your mortgage would save you about $9,000 as it is reduces your balance by about seven monthly capital repayments: but you will only see this benefit at the end of the mortgage because you will pay it off seven months earlier. There is only about $1,000 interest remaining on your car loans. Paying the $11,000 off your interest free loan then paying extra agianst the interest bearing loan brings that down to $500 and paying it off your interest bearing loan brings it down to $200. Either way, both car loans would be finished by early 2018. In summary, if you use the $11,000 against your car loans, you will save $8,500-$8,800 less than paying it off the mortage, but you will have no car loans in one year rather than three. Google spreadsheet for calculations here.