The study loan (#HECS) repayment changes are now law. Here's how to calculate your repayment using the #Haskell *tax* library:
```
help = lesserOf ((flat 0.1) (marginal [(67000, 0.15),(125000,0.02)])
due = min helpBalance (getTax help repaymentIncome)
```
https://hackage-content.haskell.org/package/tax

Have fun!