#cost-of-goods-sold
Learn how to calculate and track cost of goods sold for inventory valuation
As of July 9, 2026, Etsy requires non-US sellers shipping to US buyers to use Delivered Duty Paid (DDP) — prepaying US tariffs and building them into the listing price — or lose Purchase Protection. This guide covers re-pricing by tariff category and why prepaid duties belong in inventory cost and COGS, not overhead.
Food trucks average about $346,000 in annual revenue but net only 6-9% margins. This guide covers the three numbers that decide profitability: keeping food cost between 28% and 35%, breaking commissary invoices ($300-$1,500/month) into trackable sub-accounts, and reconciling the cash drawer after every service.
Inventory turnover ratio = COGS ÷ average inventory, and it shows how many times a business sells through its stock each year. This guide covers the formula, converting turnover to days sales of inventory, industry benchmarks from 2–4 turns (industrial parts) to 10–20+ (grocery), and why slow-moving stock costs 20–30% of its value annually to hold.
The 10% Section 122 import surcharge expires automatically on July 24, 2026, when its 150-day statutory limit runs out — but expiration is not a refund, and Section 301 and Section 232 tariffs are already queued to replace it. Here's how small importers should tally what they paid, preserve refund rights, and model landed costs before the deadline.
A bookkeeping guide for unattended self-serve dog wash stations: how to reconcile coin and card revenue against machine counters, calculate a true cost per wash (roughly $3.50 against an $18–20 session price), classify shampoo and consumables as COGS, and depreciate $20,000–$30,000-per-bay equipment — including Section 179 timing and separating payment terminals from wash tubs in your fixed-asset register.
Delivery platforms take an effective 30–40% of each order once commissions, promotions, and processing fees stack up — and a multi-brand ghost kitchen that books only net deposits can't tell which concept is profitable. This guide covers per-brand revenue categorization, three methods for allocating shared rent, utilities, and labor (square footage, revenue share, labor hours), per-brand food cost tracking, and a six-step monthly close checklist.
A co-packer's quoted per-unit price can understate real landed cost by 36% once fixed per-run charges, setup fees, and MOQ economics are counted. How food and beverage brands should classify contract-manufacturing costs as COGS, handle turn-key vs. tolling arrangements, and avoid the 5–10 point gross-margin overstatement that misclassification causes.
How to keep books for an olive oil mill that earns most of its revenue in a six-to-ten-week harvest window — separating custom-crush milling fees from own-label inventory accounting, tracking extraction yields that swing from 50 to 200 pounds of olives per gallon, valuing bulk oil in tank storage, and handling Schedule F, cash-method, and UNICAP tax questions.
How tire retreaders should book casing custody, core credits, and warranty adjustments — customer-owned casings stay off your inventory, core credits are an inventory purchase rather than an expense, and prorated warranty claims justify a monthly accrued reserve. Includes example beancount entries and a minimal chart of accounts.
On April 22, 2026 the DOJ moved certain state-licensed medical marijuana products from Schedule I to Schedule III, ending Section 280E's ban on ordinary business deductions for qualifying operators — while recreational-only dispensaries remain fully subject to 280E's COGS-only tax treatment.
Teeth-whitening studios often run an 85%+ gross margin on sessions but fail because they recognize prepaid package revenue too early, skip inventory shelf-life write-offs, and miscategorize licensing costs tied to their state's cosmetic-vs-dental classification.
A single 50-gallon barrel of used cooking oil is worth $100-185 to a biodiesel refiner, so collectors must book collected-but-unsold oil as inventory-in-transit, track actual weighed pounds per stop rather than estimates, and reconcile collected-to-shipped volume weekly to catch theft and double-invoicing before it erodes route profitability.
