I started thinking about the math…
Expenses
Student loan: $150k @ 7% = $1,741/month
Car loans: $170k @ 5% = $3,208/month
Mortgage: $4,500/month
Total: $9,448/month
Income
$350k/year = 29,167/month
Assuming a 25% aggregate tax rate*, that leaves well over $20,000 per month to pay the bills, eat, cable, medical, clothing, etc. etc. Let’s be generous and assume that they spend $5,000 per month on expenses in addition to the big bills. That still leaves $5,000 or even up to $7,000 per month to put toward debt reduction. Clearly, the first action should be to sell at least one of the fancy electric cars, but let’s assume they don’t.
1. Pay off student loan in year 1.
2. Add that $21k per year to the monthly surplus and pay off one of the clown cars in year 2.
3. Finish off the other clown car in year 3.
Forget speculative investments until they have their debt under control, a healthy emergency fund, and a healthy retirement start in low cost index funds.
* I’ve done the math on our aggregate tax rate multiple times over the years. After pre-tax savings, mortgage deductions, personal exemptions, kids, etc., our aggregate tax rate was around 17% when our income was under $100k, and it has since increased to about 25% with our income significantly higher. Yes, this includes fed, ss, Medicare, state, and property taxes (including property taxes on a rental property).