Any deposit payment you have made will reduce the amount of your first instalment. For example, if you have paid a £4500 CAS deposit: Full tuition fee charge of £25000: First instalment: £8500 less £4500 = £4000 for you to pay. Second instalment: £8250 Third instalment: £8250.
If you have paid £6500 for CAS and NUBS deposit charges, then £6500 is deducted from your first instalment.
