After-tax interest payment ($18,750) ($14,710) ($10,266) ($5,377)
Principal payment ($53,868) ($59,254) ($65,180) ($71,698)
Maintenance cost ($20,000) ($20,000) ($20,000) ($20,000)
Tax savings from maintenance cost $5,000 $5,000 $5,000 $5,000
Tax savings from depreciation $12,500 $20,000 $12,000 $7,200
Net cash flow from ownership $0 ($75,118) ($68,964) ($78,446) ($42,375)
PV cost of ownership ($224,430)