Field guidesPart 3 · Know Your Numbers3.3

How to set up your first month of books

6 MIN READ·6 STEPS·PART 3

Open a business account, choose fixed expense categories, record every purchase with its landed cost, log each sale against the unit, and close the month with a P&L.

Bookkeeping in resale is mostly inventory tracking. If you know what each unit cost and what it sold for, the statements almost write themselves.

Set the categories once and never change them. Comparability is the whole value.

01

One account, one card

Every business transaction goes through them. No exceptions in month one.

02

Fix your categories

Inventory purchases, freight, parts, rent, utilities, fuel, wages, insurance, software, fees, interest.

03

Log inventory by unit

Purchase date, load, landed cost, grade, location. A spreadsheet is fine to start.

04

Log sales against units

Sale date, price, channel, fees. That is COGS and margin in one row.

05

Reconcile weekly

Fifteen minutes weekly beats four hours at month end.

06

Close the month

P&L and an aging report on the same day every month.

Example

A single spreadsheet with a units tab and an expenses tab produces a defensible P&L in the first month.
COMMON MISTAKES
  • Categorising inventory purchases as an expense instead of tracking them into COGS on sale.
  • Reconstructing three months of receipts at once.
  • Renaming categories mid-year.

Not ready for truckloads yet? Keep building.

Part 4: Build Buying Power →

REGISTIX RESERVEKeep building.

NEXT LESSON3.1 How to build a P&LFIELD GUIDE · 7 MIN →