Our household rent, utilities, ongoing p
Ask
Our household rent, utilities, ongoing prescription medicine, and groceries are fully covered by our base income.
We have an allocated monthly debt repayment budget of $450.00 for our two remaining debts:
1. Credit Card: $4,600.00 balance at 21.5% AP (minimum monthly payment: $135.00).
2. Hospital Medical Bill: $1,400.00 balance at 0.0% AP (minimum monthly payment: $70.00).
This leaves an extra $245.00 above the combined minimums ($205.00).
My partner wants to wipe out the $1,400 medical bill in ~5 months to eliminate a monthly bill entirely (Snowball).
I want to direct all extra money to the 21.5% card to minimize interest costs (Avalanche).
Could you provide structured guidance on:
1. Confirming living immovables (housing, utilities, food, medicine) are covered before ranking debts.
2. The exact Avalanche vs Snowball comparison table (months to payoff and total interest paid).
3. The trade-offs between mathematical interest savings and early psychological milestone completion.
4. Maintaining a neutral stance without deciding for us.
Answer
Housing, utilities, ongoing prescription medicine, and groceries are fully covered by your base income, so this is a repayment comparison on $450.00/month, not a crisis ladder.
## Avalanche vs Snowball at $450/month
| Strategy | Extra goes first | Months to debt-free | Total interest |
| --- | --- | --- | --- |
| Avalanche | Credit Card 21.5% AP | 15 | $632.11 USD |
| Snowball | Hospital Medical Bill 0% AP | 16 | $830.14 USD |
Source: this turn's `payoff.py` ok:true stdout; monthly compounding assumed. These are model outputs, not predictions.
Per-debt payoff months from the same stdout:
| Debt | Avalanche months | Snowball months |
| --- | --- | --- |
| Credit Card | 14 | 16 |
| Hospital Medical Bill | 15 | 5 |
## What each route buys
**Avalanche** targets the higher-AP card first. Your partner's "medical gone in ~5 months" matches the Snowball column exactly — under Avalanche the medical bill does not clear until month 15, because every spare dollar goes to the card until it's gone. Total interest is **$198.03 lower** and you finish **one month sooner** overall.
**Snowball** targets the smaller balance first. The medical bill clears in month 5 (matching your partner's plan), removing a $70 minimum line from the budget. From month 6 onward the full $450 flows to the card. You pay $830.14 in interest and finish in 16 months.
## Trade-offs between the two
- **Pure math:** Avalanche saves $198.03 in interest and one month of payments.
- **Cash-flow milestone:** Snowball removes a recurring bill line in 5 months, so your monthly obligations drop from two minimums to one ($135 vs $205+).
- **Motivation / household alignment:** A cleared account in 5 months is a concrete, visible win — useful if staying motivated month-to-month matters more than the $198.03 spread.
- **isk:** The medical bill is at 0% AP, so its balance does not grow. The card at 21.5% compounds daily; every month extra sits on the medical bill instead of the card, the card's finance charge accrues against a larger balance.
- **Counter-risk:** If life throws a $300 surprise in month 3, the household with one fewer minimum already paid has a slightly softer floor.
## The call is yours
I will not choose. The math case is Avalanche; the momentum case is Snowball. Both finish inside 16 months on the same $450/month, so neither route is unsafe given your covered immovables. Sit with the two of you and pick which trade-off — $198.03 in interest vs. a cleared account in 5 months — matches how you want the next year to feel.