The best way to understand the potential of debt consolidation is to see the numbers. This guide provides savings tables, worked examples, and a step-by-step savings calculator so you can estimate your personal saving before making any decisions.
The Core Saving: Interest Rate Differential
The saving from debt consolidation comes from replacing high-rate debt with lower-rate debt. The larger the rate gap and the larger the balance, the greater the saving.
Annual interest saving = Total debt balance × (Old rate – New rate)
Example: $35,000 in credit cards at 20%, consolidated at 9.99%: Annual saving = $35,000 × (0.20 – 0.0999) = $35,000 × 0.1001 = $3,504/year
Over 3 years, that's $10,512 in interest saved — but the total saving picture is even larger because on minimum repayments, you'd be paying far longer than 3 years.
Savings Tables: Credit Card Debt to Personal Loan
These tables show total interest paid: minimum repayments on credit cards vs a 4-year personal loan.
Credit Cards at 20.99% (minimum repayments) vs Personal Loan at 9.99% (4 years)
| Debt Balance | CC Minimum Repmt | CC Total Interest | PL Repayment | PL Total Interest | Saving | |-------------|-----------------|-------------------|--------------|-------------------|-----------| | $10,000 | $200/mo | $12,400 | $254/mo | $2,192 | $10,208 | | $20,000 | $400/mo | $24,800 | $507/mo | $4,336 | $20,464 | | $30,000 | $600/mo | $37,200 | $761/mo | $6,528 | $30,672 | | $50,000 | $1,000/mo | $62,000 | $1,268/mo | $10,864 | $51,136 |
Note: Minimum repayment figures assume only minimum payments made on credit cards, leading to very long repayment periods. Total interest figures show cumulative interest over the full repayment period.
The savings at even modest debt levels are dramatic. $20,000 in credit card debt costs over $24,000 in additional interest on minimum repayments. Consolidated at 9.99%, the total interest cost drops to $4,336 — a saving of over $20,000.
Real-World Scenario Comparisons
Scenario 1: The Young Professional, $18,000 Across Two Cards
Before consolidation:
- Card 1: $10,000 at 20.49% — minimum repayment $200
- Card 2: $8,000 at 19.99% — minimum repayment $160
- Total minimum repayments: $360/month
- At minimums, full payoff: 28+ years, total interest: $22,600+
After consolidation (personal loan 9.49%, 3 years):
- Single repayment: $576/month
- Total interest: $2,736
- Total saving: $19,864
- Clear of debt in: 3 years (vs 28+ years)
Scenario 2: The Family Under Pressure, $42,000 in Mixed Debt
Before consolidation:
- $22,000 credit cards at average 20.99%
- $12,000 personal loan at 13.99%
- $8,000 car loan at 10.99%
- Total monthly repayments: ~$1,450/month across different due dates
After consolidation (personal loan 10.49%, 5 years):
- Single repayment: $904/month
- Monthly saving: $546
- Annual saving: $6,552
- Total interest cost: $12,240 vs prior trajectory of $48,000+
- Total interest saving: $35,000+
Scenario 3: The Homeowner, $65,000 in Debt (Equity Consolidation)
Before:
- $40,000 credit cards at 20.49%
- $25,000 personal loan at 12.99%
- Combined monthly interest cost: ~$950/month
- Combined repayments: $1,800/month
After (home equity refinance, $65,000 added to mortgage at 6.19%, 5-year payoff plan):
- Repayment on this portion ($65K at 6.19% over 5 years): $1,259/month
- Monthly saving: $541
- Total interest (5 years): $10,540 vs $57,000+ (minimum repayment path)
- Total interest saving: $46,000+
Savings Tables: Monthly Repayment Comparison
$30,000 Debt: How Much Do You Actually Pay Each Month?
| Product | Rate | 3-Year Repayment | 5-Year Repayment | |---------|------|-----------------|-----------------| | Credit cards (minimum) | 20.99% | $600 (never clears) | $600 (never clears) | | Personal loan | 8.99% | $953 | $622 | | Personal loan | 11.99% | $996 | $667 | | Personal loan | 14.99% | $1,039 | $714 | | Home equity | 6.19% | $914 | $580 |
How to Calculate Your Personal Saving
Step 1: List all debts to be consolidated
- Debt A: $X at Y% per annum
- Debt B: $X at Y% per annum
- Total: $[Sum] at average rate of [weighted average]
Step 2: Get a consolidation rate quote from NIK Finance (Free, no credit impact to get initial quote)
Step 3: Calculate annual interest saving = Total balance × (Current average rate – New rate)
Step 4: Multiply by loan term for total saving (Not exact but gives a useful rough figure)
Step 5: Subtract switching costs (for home equity) = Approximate net saving
Beyond Interest Savings: The Hidden Benefits
The dollar savings are significant, but debt consolidation provides additional benefits that don't show up in interest calculations:
Reduced financial stress. Multiple debt repayments to track across different dates is mentally taxing. One repayment on one date is dramatically simpler.
Clear end date. A personal loan with a fixed term tells you exactly when you'll be debt-free. Credit card minimum repayments have no natural endpoint.
Improved credit over time. Consistently making fixed repayments on a consolidation loan improves your credit score.
Cash flow improvement. In most scenarios, the consolidation loan repayment is lower than the combined minimum repayments. This freed cash can build savings.
Frequently Asked Questions
Is the saving calculation the same for everyone? The formula is the same but the numbers vary by your specific debt balance, rates, credit score (which determines your consolidation loan rate), and the term you choose.
What if I can only get a high-rate consolidation loan? Even a 15% personal loan replacing 20%+ credit cards is saving money. The saving is smaller but real. As your credit improves, you can refinance to a lower rate.
Does the saving calculation assume I don't make extra repayments? The tables above assume the structured fixed repayment. Making extra repayments reduces total interest further and gets you debt-free faster.
Should I include my home loan in the consolidation? Your home loan is likely already at the best rate you have. Consolidating it with other debts (rolling personal loans into a mortgage) is a different strategy — equity release — and has different implications.
Find Out Your Exact Saving With NIK Finance
Fill out our 2-minute form at nik.finance and we'll provide a personalised debt consolidation analysis — showing your exact saving across the best available products.
NIK Finance holds an Australian Credit Licence. Savings calculations are illustrative and assume interest rates don't change over the loan term.