Your starting monthly business revenue
Your starting monthly business expenses
Revenue grows at this rate; expenses at half
Total Profit
$108,550.75
Net After Tax + ACC
$79,594.98
Avg Monthly Profit
$9,045.90
Est. Tax + ACC
$28,955.77
| Month | Revenue | Expenses | Profit | Cumulative |
|---|---|---|---|---|
| Month 1 | $15,000.00 | $8,000.00 | $7,000.00 | $7,000.00 |
| Month 2 | $15,450.00 | $8,120.00 | $7,330.00 | $14,330.00 |
| Month 3 | $15,913.50 | $8,241.80 | $7,671.70 | $22,001.70 |
| Month 4 | $16,390.91 | $8,365.43 | $8,025.48 | $30,027.18 |
| Month 5 | $16,882.63 | $8,490.91 | $8,391.72 | $38,418.90 |
| Month 6 | $17,389.11 | $8,618.27 | $8,770.84 | $47,189.74 |
| Month 7 | $17,910.78 | $8,747.55 | $9,163.23 | $56,352.97 |
| Month 8 | $18,448.11 | $8,878.76 | $9,569.35 | $65,922.32 |
| Month 9 | $19,001.55 | $9,011.94 | $9,989.61 | $75,911.93 |
| Month 10 | $19,571.60 | $9,147.12 | $10,424.48 | $86,336.41 |
| Month 11 | $20,158.75 | $9,284.33 | $10,874.42 | $97,210.83 |
| Month 12 | $20,763.51 | $9,423.59 | $11,339.92 | $108,550.75 |
Understanding the profit projection methodology
Growth model
Revenue grows at the specified monthly rate using compound growth. Expenses grow at half the revenue growth rate, reflecting the typical pattern where costs increase more slowly than revenue as a business scales.
Tax estimation
The estimated annual tax is calculated using NZ individual marginal tax rates on the annualised profit. This includes income tax (after IETC) and ACC self-employed levies. Actual tax may differ based on other income, deductions, and business structure.
Using projections wisely
These projections are estimates based on consistent growth. In reality, revenue can fluctuate. Use these figures for planning purposes, and review monthly against actual results to refine your forecasts.
IRD-Aligned: Tax estimates use 2025-26 NZ income tax brackets and ACC levy rates. Projections are estimates only.
Disclaimer: This calculator provides estimates based on current HMRC rates and thresholds for the 2025/26 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your individual circumstances. Always consult a qualified accountant or tax adviser before making financial decisions. Read our terms
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