Household Budget & Cash Flow Calculator
How to Calculate Your Australian Household Savings Rate
Enter your net take-home household income alongside your fixed housing commitments, 52-week annual/quarterly bills (council rates, utilities, insurances, school fees, registration), and weekly discretionary living expenses to calculate your exact Net Household Savings Rate (%) and monthly mortgage reduction surplus.
Why the 3-Bucket Cash-Diet System Outperforms Category Spreadsheets
According to the Australian Bureau of Statistics (ABS), the average Australian household saves just 3.7% of net income. By ring-fencing 52-week bill provisions and automating a fixed weekly living allowance, coached Crown Money families average a 24% household savings rate and $29,327/year in principal reduction.
Worked Example: Moving From the 3.7% ABS Average to a 24% Savings Rate
Worked Example: On a net household income of $10,500/month ($126,000/yr after tax), lifting your savings rate from 3.7% ($388/mo) to 24% ($2,520/mo) unlocks an extra $25,584 per year in direct mortgage principal reduction—cutting 14+ years off a typical home loan.
Frequently Asked Questions About Household Budgeting With a Mortgage
Learn how to automate this structure in our step-by-step guide at /guides/automate-family-cash-flow-mortgage-reduction.
What is a good household savings rate for paying off an Australian mortgage early?
Aiming to retain 20% to 25%+ of net household income toward principal reduction typically enables a 30-year Australian mortgage to be paid off in 10 to 15 years.