#inventory
Inventory tracking, valuation, and management for businesses
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.
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 ag equipment dealerships should track floor-plan interest per unit, re-mark trade-in inventory as used tractor prices fall, and measure parts-department absorption rate — where the national average sits in the mid-60s percent and under 50% signals trouble.
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.
A 1099-K from StockX or GOAT reports gross payments, not profit. Here's how sneaker resellers track per-pair cost basis, apply FIFO to cop-and-flip inventory, deduct platform fees that run 10-12% per sale, and meet the restored $20,000/200-transaction reporting threshold with clean books.
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.
A 750ml bottle yields about 5 five-ounce pours, and wine pour cost typically runs 25–30% versus 18–24% for liquor. This guide covers FIFO costing by vintage, by-the-glass yield math, shrinkage as a real COGS line, and why wine bars need separate on-premise and off-premise revenue and COGS accounts from day one.
A lash studio's costs don't fit one "supplies" line — service consumables, retail inventory, and depreciable equipment like lash beds and LED lamps each need their own account. This guide covers a six-category chart of accounts, the Section 179 deduction most lash artists miss, quarterly retail inventory counts, and booth-renter vs. employee classification.
The 2026 IRS 1099-K threshold for platforms like eBay, StockX, and Whatnot is back to $20,000 and 200 transactions, but sneaker and trading card resellers still owe tax on profit below that line — here's how to nail cost basis, inventory tracking, and the hobby-vs-business test.
