Repayment mortgages

Every month, your payments to the lender go towards reducing the amount you owe as well as paying the interest they charge. So each month you're paying off a small part of your mortgage.
The pros: It's a simple, clear approach - you can see your loan getting smaller.

The cons: In the early years your payments will be mainly interest, so if you want to repay the mortgage or move house in the early years, you'll find that the amount you owe won't have gone down by very much.

Interest-only mortgages

As the name suggests, your monthly payment only pays the interest charges on your loan - you're not actually reducing the loan itself. This is why it's very important you arrange some other way to repay the loan at the end of the term; for example, through an investment or savings plan.
If you choose this option you will need to check that your investment or savings plan grows accordingly, so that at the end of the term you'll have enough money to pay off the loan. If it doesn't grow as planned, you will have a shortfall and you'll need to think about ways of making this up. See How to make up a shortfall.
The pros: Because you're only paying off the interest, and not the loan itself, your monthly payments will be lower.

The cons: That debt is not going to go away. Throughout the life of the mortgage, you'll need to check your investment or savings plan is on track to repay your loan at the end of the term. If you can't repay it at the end of the term you could lose your home.

Standard variable rate

Your payments move up or down with the lender's own mortgage rate, which is usually driven by the Bank of England's base rate. Not usually, but check and see.

Tracker rate

A variable rate loan with an interest rate that's at a set amount above or below the Bank of England or some other base rate, set independently from the lender. It tracks (moves up or down with) that rate. Sometimes during any special deal period and maybe even after the period too.

Discounted

interest rate Your monthly payments can go up or down, but you get a discount on the lender's standard variable rate for a set period of time. At the end of the deal, you usually change over to the standard variable rate. During the special deal: yes, almost always. They can apply even after the end of the special deal period as well.

Fixed interest rate

Your payments are set at a certain level for an agreed period. At the end of that period, they'll usually switch you to the standard variable rate. During the special deal period: yes, almost always. They can apply even after the special deal period, too.

Capped rate

Your payments are variable and often linked to a base rate, but fixed not to go above a set level (the 'ceiling' or 'cap') during the period of the deal. At the end of the period, you are usually charged the lender's standard variable rate. During the special deal: yes, almost always. They can apply even after the end of the special deal period as well.