Frequency of payment

Whooshhiccup

Recently moved house. On a fixed term with monthly payments. Plan to over pay each month on a regular basis. Not massively so but some. 

Trying to work out or find calculator that finds out if better to pay monthly or biweekly as seen on the internet thingy.  

DullGreyGuy

The sooner you pay the more interest you save, just need to be aware of any limits on number of transactions allowed etc

ACG

Most mortgages charge interest daily. 
If you pay your mortgage as normal on the 1st of the month, it would be cheaper than if you paid it on the 2nd, which would be cheaper than if you paid it on the third and so on. 

So if you plan on overpaying, assuming your mortgage allows it - overpay as soon as you can. Although it might also be worth checking if you can get any savings accounts at higher rates than your mortgage. My mortgage is 2.5%, I opened an ISA last week at 4%.