Created
February 27, 2017 12:59
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year = 2017 | |
rpi = 0.02 | |
inflation = 0.027778 | |
maintance = 8570 | |
start_fee = 9250 | |
def loan(target, maint=maintance): | |
return (start_fee * (1 + inflation) ** (target - year)) + maint | |
def total_fee(year, accum=0): | |
return (accum + loan(year)) * (1 + rpi) | |
def total(start, end): | |
accum = 0 | |
current_year = start | |
while end+1 > current_year: | |
accum = total_fee(current_year, accum) | |
current_year += 1 | |
return accum | |
wipe = 30 | |
salery = 40000 | |
rate_increase = 0.05 | |
def years(amount, start_salery=salery): | |
y = 0 | |
pay_sum = 0 | |
while y < 30 and amount > 0: | |
# Intrest | |
amount += amount * inflation | |
# Pay off | |
pay_off = start_salery * 0.09 | |
pay_sum += pay_off | |
amount -= pay_off | |
start_salery += start_salery * rate_increase | |
y+=1 | |
if amount < 0: | |
amount = 0 | |
return y, amount, pay_sum | |
for i in range(4): | |
start = 2017 + 4 * i | |
end = start + 4 | |
print(str(start) + " - " + str(end)) | |
after_uni = total(start, end) | |
print("Total debt after uni: " + str(after_uni)) | |
yy, amount, pay_sum = years(total(start, end)) | |
print("In " + str(yy)) | |
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9% is only paid on > £21000, so that should be subtracted from the salary value.