Fable
The pawnshop's general ledger and every transaction at the alley stall
Manager Li of the pawnshop in town reviewed the general ledger once a month. At the start of the month, 100,000 guan came in as pawn deposits; by month's end, 70,000 guan had been redeemed, leaving 30,000 guan in the shop. After deducting staff wages, shop rent, and insurance, the net profit was 15,000. Manager Li tapped the ledger and said profits were good and the business was healthy. The shop had been open at the alley entrance for three years, expanding from one storefront to three.
Manager Li's nephew came to run things for a while that summer. He didn't want to look at the general ledger; instead he stacked every pawn ticket—both pledges and redemptions—into a pile and pored over them one by one under the lamp. Around midnight he discovered something: live pledges redeemed within three months of pawning accounted for 70% of transactions, but each earned the shop only about a hundred wen. Dead pledges not redeemed for over a year accounted for only 30%, but each earned anywhere from two to five strings of cash.
The nephew drew a more detailed table. Pawn-with-redemption customers kept the clerks busiest—inspecting goods, appraising, filling out tickets, and storing each took three times as long as dead pawns. Most dead-pawn customers came from distant villages, made one visit per transaction, and left, while clerks sat at the counter waiting. The marginal profit on pawn-with-redemption was nearly eaten up by clerk labor.
Manager Li refused to accept it. He pointed to the general ledger and said gross margin was still over thirty points, so how could there be a loss? His nephew pulled out the individual pawn tickets and calculated them one by one: for some thin-fabric pawns, the clerk spent half an hour appraising, filling out the ticket, storing it, and locking it up, collected seventy wen in interest for the period, and after excluding shop rent, netted eighteen wen. Spread across all tickets, shop rent still looked fine, but when this ticket was broken out on its own, every transaction was losing the clerk's time.
The general ledger and the individual ledger were at odds. The general ledger said this business was worth expanding; the individual ledger said some transactions lost more the faster they expanded. Manager Li did not believe it at first, until his nephew laid out all the tickets from that month with profits below eighteen wen—more than two hundred of them, whose combined profit was about the same as one dead pawn.
Manager Li changed the accounting method. At month-end, he first looked at the general ledger to see whether the overall profit margin was still on track. Then he broke it down by pawn type and customer type, listing unit profit and per-ticket cost separately for each category. Dead pawns and live pawns would from then on use two pricing lines—raise interest on dead pawns, set a minimum pawn price for live pawns, and directly refuse anything below a certain floor price.
Before leaving, the nephew left one sentence: gross margin is the shop's thermometer, a single transaction is the shop's vascular map. A normal temperature does not mean the vessels are unblocked. Before expanding the shop, first see whose backs the profit is resting on.