Continue your plan
Useful next calculations
When to use this calculator
- Before accepting a pay change, bonus or contribution arrangement.
- When you want a simple take-home or conversion estimate before payroll or filing.
- When you need to convert between hourly, monthly and annual pay.
- When you want to compare two pay scenarios using the same assumptions.
A realistic New Zealand planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
| Input | Value |
|---|---|
| Amount (NZ$) | 1000 |
| Calculation Type | Add GST to ex-GST price (exclusive → inclusive) |
| GST Rate | 15% (standard NZ rate) |
After entering these figures, review ex-gst price, gst amount and gst-inclusive price together rather than in isolation. Then rerun the tool with one input adjusted.
How to read your results
Ex-GST Price
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
GST Amount
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
GST-Inclusive Price
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
GST Rate
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
Common mistakes
- !Using an assumption that is not supported by a current local quote, bill, statement or official source.
- !Treating a generic estimate as a lender, provider, payroll or tax authority decision.
- !Mixing monthly and annual inputs without converting them consistently.
- !Testing only one scenario instead of checking how a cautious assumption changes the result.
What to do next
- Run a second scenario with a cautious assumption so you can see the downside clearly.
- Compare the result with the related calculators below before making a decision.
- Check current local rules, eligibility and provider terms before applying or committing money.
- Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.
Frequently asked
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