Debt Payoff Strategist

Compares snowball vs avalanche payoff strategies with timeline projections, interest savings, and motivation milestones. Input your debts — credit cards, student loans, auto loans, personal loans, medical bills — and get month-by-month payoff schedules, total interest comparisons, and celebration milestones to keep you motivated through the journey.

Supported Platforms & Integrations

Platform	Integration Type	Features
Mint (Credit Karma)	CSV export import	Auto-import debt balances and minimum payments
YNAB (You Need a Budget)	CSV export import	Category-aware debt tracking, budget alignment
Undebt.it	Strategy comparison	Cross-validate payoff timelines and methods
NerdWallet	Reference data	Current average APR benchmarks by debt type
Google Sheets / Excel	Manual entry template	Custom debt input with formula-ready export
Credit Karma	Reference data	Current debt balances and interest rate verification

When to Use

• Starting a debt-free journey: Build your complete payoff plan with strategy comparison and realistic timelines
• Choosing between snowball and avalanche: See exact dollar differences to make an informed choice based on your personality
• Extra payment allocation: Determine where to apply a raise, bonus, or tax refund for maximum debt reduction impact
• Refinancing decision: Compare your current payoff timeline against a refinanced scenario to see true savings
• Motivation check-in: Regenerate your plan monthly to see updated milestones and progress visualization
• Partner financial planning: Create a shared payoff plan that both partners can track and celebrate together

Alternatives to Consider

• Undebt.it web app: If you want a dedicated web-based debt tracker with more visualization options
• YNAB debt management: If you already use YNAB and want integrated budgeting plus debt tracking
• Credit counselor (NFCC): If you are overwhelmed by debt and need professional negotiation with creditors

Quick Start

Copy
skill: debt-payoff-strategist
config:
  strategy: compare  # snowball | avalanche | compare
  extra_monthly_payment: 300
  include_milestones: true
debts:
  - name: "Chase Visa"
    balance: 8500
    apr: 22.99
    minimum_payment: 170
  - name: "Student Loan"
    balance: 24000
    apr: 5.50
    minimum_payment: 280
  - name: "Car Loan"
    balance: 12000
    apr: 6.90
    minimum_payment: 350
  - name: "Medical Bill"
    balance: 2800
    apr: 0
    minimum_payment: 100

Example Input:

Monthly budget for debt payments: $1,200
Extra available: $300/month above minimums

Debts:
1. Chase Visa: $8,500 at 22.99% APR, $170/mo minimum
2. Student Loan: $24,000 at 5.50% APR, $280/mo minimum
3. Car Loan: $12,000 at 6.90% APR, $350/mo minimum
4. Medical Bill: $2,800 at 0% APR, $100/mo minimum

Example Output:

DEBT PAYOFF COMPARISON
================================
Total Debt: $47,300
Total Minimum Payments: $900/mo
Extra Payment: $300/mo
Total Monthly: $1,200/mo

                    AVALANCHE        SNOWBALL
                  (highest APR)   (lowest balance)
Payoff Date:      March 2029       May 2029
Total Interest:   $5,847           $6,491
Interest Saved
 vs minimums:     $4,215           $3,571
Months to Free:   36 months        38 months

AVALANCHE ORDER:          SNOWBALL ORDER:
1. Chase Visa (22.99%)    1. Medical Bill ($2,800)
2. Car Loan (6.90%)       2. Chase Visa ($8,500)
3. Student Loan (5.50%)   3. Car Loan ($12,000)
4. Medical Bill (0%)      4. Student Loan ($24,000)

RECOMMENDATION: Avalanche saves $644 more in interest.
But Snowball gives you a WIN in just 7 months (Medical
Bill paid off), which boosts motivation. Choose based
on your personality:
-> Numbers-driven? Choose Avalanche.
-> Need quick wins? Choose Snowball.

MOTIVATION MILESTONES (Avalanche):
  Month 3:  $3,200 paid off (7% of total!)
  Month 7:  Medical Bill GONE — 3 debts remain
  Month 14: Chase Visa GONE — 2 debts remain
  Month 24: Car Loan GONE — 1 debt remains
  Month 36: DEBT FREE! Total paid: $53,147

Advanced Configuration

Strategy Variants

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# Hybrid: Snowball first debt, then switch to avalanche
strategy: hybrid

# Custom order: You choose the sequence
strategy: custom
custom_order: ["Medical Bill", "Chase Visa", "Car Loan", "Student Loan"]

# Minimum only: Baseline comparison
strategy: minimum-only

Extra Payment Scenarios

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scenarios:
  - name: "Base"
    extra: 300
  - name: "With side hustle"
    extra: 800
  - name: "After raise"
    extra: 500
    start_month: 4  # Raise starts in month 4

Parameters Reference

Parameter	Type	Default	Description
strategy	string	compare	snowball, avalanche, hybrid, custom, compare
extra_monthly_payment	number	0	Amount above minimums to apply
include_milestones	bool	true	Generate motivation milestones
include_monthly_schedule	bool	false	Full month-by-month amortization
emergency_fund_first	bool	false	Suggest $1K emergency fund before aggressive payoff
windfall_amount	number	0	One-time extra payment (tax refund, bonus)
windfall_month	number	1	Month to apply windfall payment
refinance_scenario	bool	false	Include balance transfer / refinance comparison
balance_transfer_fee	number	0.03	Fee for balance transfer (3% default)
balance_transfer_apr	number	0	Promotional APR for transfer
promo_period_months	number	15	Months of promotional rate
currency	string	USD	Currency for display

Core Concepts

Concept	Description
Avalanche Method	Pay minimums on all debts, throw extra at the highest APR first — mathematically optimal for total interest
Snowball Method	Pay minimums on all debts, throw extra at the smallest balance first — psychologically optimal for motivation
Debt-Free Date	The projected month when all debts reach zero balance under the chosen strategy
Interest Savings	Difference in total interest paid between your chosen strategy and making minimum payments only
Motivation Milestones	Celebration points: each debt eliminated, percentage thresholds (25%, 50%, 75%), and the debt-free date

Strategy Flow:

  Debt List ──> Sort by ──> Payment Allocation ──> Monthly
                Strategy       Engine               Projection
                   |               |                     |
          ┌────────┼────────┐      |                     |
          v        v        v      v                     v
      Avalanche Snowball  Hybrid  Apply Extra      ┌──────────┐
      (by APR)  (by bal)  (mix)   to Top Debt      │ Month 1  │
          |        |        |         |             │ Month 2  │
          v        v        v         v             │  ...     │
       ┌──────────────────────────────────┐        │ Month N  │
       │  Compare: Timeline + Interest    │        │ DEBT FREE│
       │  + Milestones + Recommendations  │        └──────────┘
       └──────────────────────────────────┘

Workflow Examples

Scenario 1: Young Professional with Credit Card Debt

Input: 3 credit cards ($3K, $7K, $12K) at 18-26% APR, $500/mo extra available Process: Compare avalanche vs snowball, include balance transfer scenario for highest APR card Output: Avalanche saves $2,100 in interest, balance transfer saves additional $900, debt-free in 22 months

Scenario 2: Family with Mixed Debt Types

Input: Mortgage (excluded), car loan, student loans (2), credit card, medical bill, $400/mo extra Process: Compare all strategies, include tax refund windfall of $3,200 in month 3 Output: Hybrid approach recommended — snowball medical bill first (quick win in 2 months), then avalanche remaining. Windfall applied to credit card saves $680.

Scenario 3: Minimum Payment Reality Check

Input: $35,000 across 5 debts, only minimum payments affordable, considering debt consolidation Process: Calculate minimum-only timeline, compare with consolidation loan at 8% APR Output: Minimums only: 14 years, $22,400 in interest. Consolidation loan: 5 years, $7,800 interest. Savings: $14,600.

Best Practices

1. Build a $1,000 emergency fund first: Without it, any unexpected expense forces new debt and derails your payoff plan
2. Automate minimum payments: Never risk late fees or credit score damage — automate all minimums, then manually apply extra to the target debt
3. Celebrate every milestone: Mark each debt elimination with a small reward — the psychological boost of milestones is proven to improve completion rates
4. Revisit the plan monthly: As debts decrease, your freed-up minimums compound — recalculating shows accelerating progress
5. Do not close paid-off credit cards immediately: Keeping accounts open maintains your credit utilization ratio and average account age

Common Issues

Issue: Plan becomes unrealistic after unexpected expenses Cause: Life happens — car repairs, medical bills, or income changes disrupt the plan Fix: Re-run the strategist with updated balances and adjusted extra payment amount. Even reducing extra payments from $300 to $100 keeps the plan alive — the key is consistency, not speed.

Issue: Avalanche feels demotivating when largest APR is also largest balance Cause: When the highest-interest debt is $20K+, it can take a year to eliminate, killing motivation Fix: Use the hybrid strategy — eliminate one small debt first for a quick win, then switch to avalanche for the remaining debts. The interest cost of one small snowball win is typically under $50.

Issue: Student loan interest deduction not factored in Cause: US student loan interest is tax-deductible up to $2,500/year, effectively reducing the APR Fix: Set the student loan APR to the after-tax-benefit rate. For example, 5.5% APR in the 22% tax bracket effectively becomes 4.29%. This may change the avalanche order.

Privacy & Data Handling

All debt calculations run entirely on your local machine. No balance information, APR data, creditor names, payment amounts, or financial details are transmitted to any external service. The tool does not connect to any bank, lender, or credit bureau. All projections are calculated using standard amortization formulas locally. Your debt information is never stored between sessions — each calculation is completely stateless.