Tax & expenses

How to add pre-tax and post-tax deductions

Add deductions that come out of your pay before or after tax, like union fees or car parking, see them on your pay day, and change or delete one later.

  • Video 4:35
  • 26 steps
  • Shown on iPhone
  • Updated Oct 2026

No sound needed: every step is captioned.

Recorded as: SA public hospital nurse, Registered Nurse/Midwife Level 1, Increment 4 (Nursing/Midwifery (South Australian Public Sector) Enterprise Agreement 2022)

Jump to a step
  1. 1Open Settings.
  2. 2Find Pre & Post-Tax Deductions.
  3. 3Your deductions list.
  4. 4Turn on Tax Estimate.
  5. 5Show after-tax estimates.
  6. 6Add a deduction.
  7. 7Name it.
  8. 8Fixed amount or percentage.
  9. 9Before or after tax.
  10. 10Enter the amount.
  11. 11Dates and other options.
  12. 12Save it.
  13. 13Add another.
  14. 14Name it.
  15. 15Keep Before Tax.
  16. 16Enter the amount.
  17. 17Save it.
  18. 18Your list.
  19. 19Back to your roster.
  20. 20Tap your pay day.
  21. 21Open Tax & Deductions.
  22. 22Read the breakdown.
  23. 23Stats too.
  24. 24Made a mistake? Go back to your deductions.
  25. 25Change one.
  26. 26Delete one.

  1. Step 1: Open Settings.

    Tap Settings at the bottom right of the screen.

    • Tap Settings at the bottom right.

  2. Step 2: Find Pre & Post-Tax Deductions.

    Scroll down to Pay & Finance and tap Pre & Post-Tax Deductions.

    • Tap Pre & Post-Tax Deductions under Pay & Finance.

  3. Step 3: Your deductions list.

    There are no deductions yet. Add anything taken from your pay here, like union fees or car parking.

    • There are no deductions yet.
    • Add anything taken from your pay here, like union fees.

  4. Step 4: Turn on Tax Estimate.

    Your pay day shows deductions only when Tax Estimate is on. If it's off, tap Turn On Tax Estimate.

    • Your pay day shows deductions only when Tax Estimate is on.
    • Tap Turn On Tax Estimate.

  5. Step 5: Show after-tax estimates.

    Turn on Show After-Tax Estimates. Your tax details are set here; the Tax tutorial explains them. Then tap the back button at the top left.

    • Turn on Show After-Tax Estimates.
    • Your tax details are set here. The Tax tutorial explains them.
    • Tap the back button at the top left.

  6. Step 6: Add a deduction.

    Tap Add Deduction. The New Deduction screen opens.

    • Tap Add Deduction.

  7. Step 7: Name it.

    Tap Name and type a name. In this example, Union Fees.

    • Tap Name and type a name. In this example, Union Fees.

  8. Step 8: Fixed amount or percentage.

    Type can be a fixed amount or a Percentage of your gross pay. In this example, we kept Fixed Amount.

    • Type can be a fixed amount or a Percentage of your gross pay.
    • In this example, we'll keep Fixed Amount.

  9. Step 9: Before or after tax.

    Taken is when it comes out of your pay: before or after tax. Tap Taken and choose After Tax. The line under it now says it's taken out after tax.

    • Taken is when it comes out of your pay: before or after tax.
    • Tap Taken and choose After Tax.
    • The line under it now says it's taken out after tax.

  10. Step 10: Enter the amount.

    Amounts are for a fortnight. Tap Amount and type the amount. In this example, 25.

    • Amounts are for a fortnight. Tap Amount.
    • Type the amount. In this example, 25.

  11. Step 11: Dates and other options.

    Scroll down a little. No dates means it comes out of every pay; add a Start Date or End Date if it only applies for a while. Enabled is on, so it's taken out of your pay. You can also pick an Icon and Colour, and Preview shows how it will look.

    • No dates means it comes out of every pay.
    • Add a Start Date or End Date if it only applies for a while.
    • Enabled is on, so it's taken out of your pay.
    • You can also pick an Icon and Colour.
    • Preview shows how it will look.

  12. Step 12: Save it.

    Tap Save at the top right. Your deduction is on the list.

    • Tap Save at the top right.

  13. Step 13: Add another.

    Now add one that comes out before tax. Tap + at the top right.

    • Now add one that comes out before tax.
    • Tap + at the top right.

  14. Step 14: Name it.

    Tap Name and type a name. In this example, Car Parking.

    • Tap Name and type a name. In this example, Car Parking.

  15. Step 15: Keep Before Tax.

    We kept Taken as Before Tax. Before tax lowers your taxable income. After tax only lowers your take-home.

    • We'll keep Taken as Before Tax.
    • Before tax lowers your taxable income.
    • After tax only lowers your take-home.

  16. Step 16: Enter the amount.

    Tap Amount and type it. In this example, 20.

    • Tap Amount and type it. In this example, 20.

  17. Step 17: Save it.

    Tap Save.

    • Tap Save.

  18. Step 18: Your list.

    Both deductions are on your list. Each one has a switch to turn it off for a while.

    • Both deductions are on your list.
    • Each one has a switch to turn it off for a while.

  19. Step 19: Back to your roster.

    Tap the back button at the top left. If the tabs at the bottom have shrunk to one round button, tap it to show them again. Then tap Roster.

    • Now let's see your pay day. Tap the back button at the top left.
    • Tap the round button at the bottom left.
    • Then tap Roster.

  20. Step 20: Tap your pay day.

    Swipe to the month of your pay day. Your pay day has a money bag on it. Tap it.

    • Tap your pay day. It has a money bag.

  21. Step 21: Open Tax & Deductions.

    Swipe the box up to see the details, then tap Tax & Deductions to open it.

    • Swipe the box up to see the details.
    • Tap Tax & Deductions to open it.

  22. Step 22: Read the breakdown.

    Pre-Tax Deductions shows your car parking. Taxable earnings is your pay after the car parking comes off, so the tax is worked out on less. Then the tax comes off. Post-Tax Deductions shows your union fees. What's left is your Estimated Net Pay.

    • Pre-Tax Deductions shows your car parking.
    • Taxable earnings is your pay after the car parking comes off.
    • So the tax is worked out on less.
    • Then the tax comes off.
    • Post-Tax Deductions shows your union fees.
    • What's left is your Estimated Net Pay.

  23. Step 23: Stats too.

    Stats shows your deductions too, in the Tax Estimate card.

    • Stats shows them too, in the Tax Estimate card.

  24. Step 24: Made a mistake? Go back to your deductions.

    Close the box with the X. Tap Settings, then Pre & Post-Tax Deductions.

    • Made a mistake? Close the box with the X.
    • Tap Settings, then Pre & Post-Tax Deductions.

  25. Step 25: Change one.

    Tap the deduction you want to change. In this example, Car Parking. Tap the amount and type the new one (we changed it to 15), then tap Save.

    • To change one, tap it. In this example, Car Parking.
    • Tap the amount and type the new one. In this example, 15.
    • Tap Save.

  26. Step 26: Delete one.

    Tap the deduction you want to delete. In this example, Union Fees. Scroll down and tap Delete Deduction, then tap Delete to remove it.

    • To delete one, tap it. In this example, Union Fees.
    • Tap Delete Deduction.
    • Tap Delete to remove it.

Good to know

  • In Australia, enter fixed amounts per fortnight even if you're paid weekly or monthly. MyRoster adjusts them to your pay.
  • A percentage is worked out on your gross pay for each pay period (up to 100%).
  • Any pay period that overlaps a deduction's dates counts the whole deduction for that period. Past pay periods keep what applied at the time.
  • Reimbursed to You (Australia, before-tax deductions only): turn it on for a deduction that's paid back to you, like some car parking or payroll giving. The pay-day card then adds a Net Pay + Benefit line, "Including reimbursed deductions".
  • Salary sacrifice to super isn't added here. Use Settings › Superannuation › Your Contributions.
  • Salary packaging has its own page (see the Salary Packaging tutorial). Your tax details, like the tax-free threshold, HECS/HELP and Medicare, are explained in the Tax tutorial.
  • In Multi-Job Mode, each job has its own deductions.
  • The UK and New Zealand have this page too. Enter amounts for your own pay period; there's no Reimbursed to You option.
  • You can also touch and hold a deduction for Edit and Delete.
  • The amounts in this tutorial are an example. MyRoster's figures are estimates worked out from your settings, not tax or financial advice, and your payslip may differ.

Still stuck? Email Jamie — I answer every message personally.

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