Buy now pay later: a short installment

Buy now, pay later is a short installment. A $180 purchase split into six payments of $30, at zero stated interest, is still $180 of capacity for six months. The ticket is small. The clock is short. The obligation is the remaining installments, not a revolving balance, and there is no named collateral.

Track 22 lesson 2 is the installment formula on a car: a fixed monthly amount that retires a principal over n periods. BNPL is that shape with n often equal to three, four or six, and with a stated rate of zero. Capacity is still occupied. Six times $30 is $180 that this cash date, and the next five, must find, even though no interest line prints.

If a $4 fee applies on a missed installment, the cost of that miss is $4 on $30. As an annual rate on that installment, ($4 / $30) × (365 / 30) = 162.2 percent for a 30-day delay. That 162.2 percent is illustrative of the miss, not of the plan. The plan's stated interest is still zero. The miss is a different clock: a fee restated as a year on the installment that was late, the same restatement Track 1 lesson 15 uses when a day-count turns a posted rate into a different year.

Track 1 lesson 2 prices recovery: fast recovery is a cheaper loan. BNPL is cheaper than that lesson's card-versus-mortgage-versus-pledged-portfolio comparison because the ticket is small and the clock is short, not because the obligation is not a claim. It is an unsecured draw with a schedule.

Zero stated interest is a rate on the plan. $180 of capacity for six months is the claim. A miss fee restated as a year is a third number, and it describes the miss.