deposit 5000Can I deposit 5000 cash into my bank? Suspicious activity in excess of $5,000 detected by the bank or an institution is also required to be reported, Castaneda eTo get a £5k Deposit Mortgage, you'll need to have at least a £5,000 deposit. For example, if you wanted to buy a home worth £300,000: £300,000 = Property . £5,000. £5k deposit + £295,000.