To get a pre-tax yearly income I can calculate the weekly wage with an assumed number of working hours per week, I can then work out my yearly wage () by multiplying the weekly wage by the number of weeks in the year.

Special Rates

I will include in the weekly wage the regular, re-occuring Benefits I accrue within each weekly period, this being the penalty benefits for working on Saturdays & Sundays.

Below is a table depicting my chosen Hourly worktime, alongside the Penalty Rates where applicable.

DayHoursPenalty Benefit
Monday4h100%
Friday4h100%
Saturday6h150%
Sunday4h200%
Given that I’m paid bi-weekly, and earn an hourly wage of $25,
I can use this formula to
Where;
W = Hourly Wage
= Weekday Hours worked
= Saturday Hours worked
= Sunday Hours worked

Plugging in my values gets me;

Thus my weekly income is **625 \times 52.14=32587.5Y=32587.5Y$ is Yearly Income.

Wage Growth

According to the [Australia Bureau of Statistics](https://www.abs.gov.au/media-centre/media-releases/wages-increase-08-cent-june-quarter#:~:text=The%20Wage%20Price%20Index%20(WPI,wages%20grew%200.8%20per%20cent.), Wage Growth is averaged at around 3.6%, if we assume that this is maintained throughout the next 5 years, we can construct a Explicit Geometric Sequence, where represents how many year’s it has been since we took on the loan. Full Values;

Warning

re-look at dates to make specific estimate

Archive

CarCostAge
Kia Cerato$27,8900
2017 Mitsubishi Lancer$19,0006
2015 Suzuki Swift GL$10,9908

Beyond Bank (Low Rate Loan)

Fixed Compensation Rate: 8.27% Maximum Age: 8

Beyond Bank (Special Offer)

Fixed Compensation Rate: 6.36% Max Age: 2

Heritage Bank

Fixed Compensation Rate: 7.04% Max Age: 7

Commbank

Fixed Compensation Rate: 9.04% Maximum Age: 5

Westpac

Fixed Compensation Rate: 10.67% Maximum Age: 7

BankKia Cerato2017 Mitsubishi Lancer2015 Suzuki Swift GL
BB (L.R)5931.934041.112337.47
BB (Special)4538.98
Heritage5033.513429.07
Commbank6496.78
Westpac7698.275244.43