#bookkeeping
Modern bookkeeping techniques using plain-text and automated workflows
Flight schools should book prepaid block-time packages as deferred revenue, distinguish owned aircraft from leaseback and dry/wet-leased aircraft for depreciation purposes, classify CFIs correctly against IRS behavioral-control tests, and track revenue-per-aircraft-hour to know if the business is actually profitable.
Flight schools are utilization businesses — track block-time deferred revenue per student, leaseback per tail, fuel and overhaul reserves per hour, CFI classification, and revenue per aircraft hour to clear break-even.
Form 1099-K reports gross App Store and Google Play sales — before the 15–30% platform commission, refunds, currency conversion, and marketplace-remitted taxes — so it will never match your bank deposits. Track four numbers (gross revenue, net payout, after-tax income, real take-home) with a five-step monthly reconciliation routine.
Mobile detailing and ceramic coating businesses should track material costs separately (typically 4-9% of revenue), record coating warranties and membership plans as deferred revenue until service is delivered, and can deduct up to $32,000 in 2026 under Section 179 on service vans between 6,001-14,000 lbs GVWR.
Mobile bartending businesses must book non-refundable event deposits as a liability until the event is performed, carry liquor liability insurance separate from general liability, and track licensing and permit costs — typically 2-5% of revenue — as a distinct expense category.
ASU 2020-07 requires nonprofits to present contributed nonfinancial assets as a separate line item, disaggregated by category, with disclosed valuation methods. This guide covers the fair-value rules of ASC 958-605 — which volunteer services are recordable, how to value donated goods, professional services, and facility use, the offsetting journal entries, and the $25,000 Form 990 Schedule M threshold.
The IRS payroll tax deposit lookback period runs from July 1 of the second preceding year through June 30 of the prior year; employers reporting $50,000 or less in that window deposit monthly, those above it deposit semiweekly, and accumulating $100,000 or more in liability on a single day triggers a next-day deposit requirement and semiweekly status through the following year.
Percentage rent adds a variable charge — typically 5-10% of gross sales above a lease's breakpoint — on top of base rent in most shopping-center, mall, and restaurant leases, and landlords can audit tenant sales records to enforce it.
Podcast sponsorship cash isn't earned on the day it's invoiced — under ASC 606 it's deferred revenue until guaranteed impressions actually deliver, and skipping that step, plus mis-costing network splits and guest booking time, is why production shops with full sponsor calendars still lose money.
Private investigation agencies should book client retainers as liabilities until earned, track costs per case with job costing, and classify subcontractors correctly to avoid misclassification penalties and licensing risk.
How small businesses can reconcile AI agent-initiated purchases under ACP and AP2, tag agent-channel sales, track transaction fees, and defend against the chargeback risk of non-human checkouts.
RV repair shops often bill $140-$190/hour retail but get reimbursed $20-$40/hour less on warranty labor, and two-thirds of shops under-mark parts by $40,000-$70,000 a year, so separate warranty, retail, and parts revenue accounts to see the real margin.
