The Step-Down Method, Explained: Allocate Service Department Costs in the Right Sequence
The step-down method allocates service-department costs in ranked sequence, each step normalized over open departments only.
#expense-allocation
Expense Allocation
Allocate expenses across departments, projects, or categories
Vacation Home Tax Rules, Explained: The 14-Day and 10% Tests That Decide Whether Your Second Home Is a Residence, a Rental, or Tax-Free
Personal use over 14 days or 10% of rental days makes your vacation home a residence under IRS rules — and caps rental deductions at rental income.
Track Costs by Project, Customer, and Cost Center Without a 400-Account Chart of Accounts
Keep 80 to 150 accounts and tag each line by project, customer, or cost center — one Travel account with tags replaces dozens of Travel-Project-X accounts.
Dermatology Practice Bookkeeping: Running Medical, Mohs, and Cosmetic as Separate Profit Centers
How to split a dermatology practice's books into medical, Mohs, cosmetic, retail, and pathology profit centers — with the chart-of-accounts structure, overhead allocation rules, denial and per-case metrics, and deferred-revenue treatment each one needs.
Your Phone Bill Is Partly Deductible (Your Home Internet Too): A Self-Employed Owner's Guide to Business-Use Percentages
Self-employed owners can deduct the business-use share of a cell phone and home internet — not 100% — and this guide shows three defensible ways to set that percentage, why the first home landline is never deductible, and where the amounts land on Schedule C.
Zone Skipping for Small E-Commerce Shippers: When One Truckload Beats 3,000 Parcel Labels
Zone skipping loads all parcels bound for one region onto a single truck and hands them to the carrier near the customer, repricing a Zone 7–8 cross-country label as bulk freight plus a Zone 2 final leg — a 20–40% cut on that leg and roughly $5,000 off a $30,000 week for 3,000 New York–to–California packages. It only pays above about 1,000–1,500 parcels a week to one region and adds about one transit day; this guide covers the break-even math, the mistakes that erase the savings, cheaper alternatives like split inventory and rate shopping, and how to book linehaul freight, consolidator fees and final-leg postage so the program's margin is actually measurable.
Greenhouse Grower Cost Accounting: Allocate Space, Heating, Labor, Shrink, and Crop Turns to See Profit per Plant
A cost-accounting framework for greenhouse growers that allocates overhead by square-foot-weeks, splits heating and labor by crop, and tracks shrinkage by cause — so pricing rests on cost per marketable plant, not cost per plant started. Includes a worked example where $240,000 of shared costs over 320,000 square-foot-weeks yields a $0.75 occupancy rate.
Cloud Cost Allocation for Small SaaS Teams: A Practical Showback Guide
A 30-day showback playbook for small SaaS teams — define reporting dimensions, enforce a short tagging dictionary, split shared costs with defensible formulas, and reconcile cloud spend to the books before AI workloads (now managed by 98% of FinOps survey respondents) obscure gross margins.
Government Contractor Bookkeeping: A Practical Cost-Reimbursement Readiness Guide
A step-by-step readiness guide for cost-reimbursement contractors—how to build a traceable chart of accounts, run labor charging as a daily control, calculate indirect rates, and produce an invoice package reproducible from your books, with a 60-day plan.
Manufacturing Overhead Allocation: How Activity-Based Costing Fixes Your Product Cost
A plantwide overhead rate cross-subsidizes products — undercosting complex low-volume jobs by 35% or more. This guide shows how to calculate a defensible predetermined rate, reconcile applied vs. actual overhead monthly, and graduate to ABC or time-driven ABC when product and volume diversity make a single rate lie.
Wholesale Distributor Bookkeeping: Freight-In, Vendor Rebates, and Consignment Inventory
A guide to the three bookkeeping fault lines that distort a wholesale distributor's margin and balance sheet — capitalizing freight-in into landed cost, accruing vendor rebates as a contra-COGS reduction instead of income, and tracking consignment inventory by location and ownership — plus a monthly close checklist and journal entries.
Mobile Home and RV Park Bookkeeping: Utility Bill-Backs, Cost Segregation, and Clean Entity Accounting
Parks earn their margin in the ledger. Submetering or RUBS recovers 80-100% of variable utility costs and typically lifts net income 20-30%, and a cost segregation study reclassifies 40-60% of depreciable basis into 5- and 15-year property that now qualifies for 100% bonus depreciation. This guide covers gross-up bill-back accounting, lot rent vs. home rent separation, intercompany flows between holding and management entities, Form 8594 allocation, and a monthly close checklist for manufactured home and RV parks.