40 terms every small firm operator should know.

Trial Balance

A bookkeeping worksheet listing every general ledger account and its debit or credit balance at a point in time to verify total debits equal total credits.

Depreciation Schedule

A fixed-asset register that tracks each capital asset's cost, useful life, depreciation method, and accumulated depreciation across its lifecycle.

Chart of Accounts

The structured list of every general ledger account a business uses to classify transactions, organized by account type and assigned numeric codes.

Bank Reconciliation

The process of matching every transaction in a company's cash ledger against the corresponding line on the bank statement to confirm the books and the bank agree.

Accrual Basis

An accounting method that recognizes revenue when it is earned and expenses when they are incurred, regardless of when cash changes hands.

Deferred Revenue

A liability on the balance sheet representing cash a company has collected for goods or services it has not yet delivered.

Audit Trail

A chronological, unchangeable record of every transaction, adjustment, and user action in an accounting system, including who made the change and when.

Practice Management System

Software that centralizes a professional services firm's client records, engagements, workflows, time and billing, and document management in a single workspace.

Matter Management

The practice of organizing all documents, communications, deadlines, tasks, and billing data associated with a single legal engagement inside one structured container called a matter.

Conflict Check

The ethics-required search of a law firm's records to determine whether taking on a prospective client or matter would create a conflict of interest with an existing or former client.

IOLTA Account

A pooled trust account where attorneys hold client funds that are too small or too short-term to earn meaningful interest, with the interest remitted to the state bar to fund legal aid.

Retainer Agreement

A written contract between an attorney and client specifying the scope of representation, fee structure, advance payment, and terms under which the attorney will provide legal services.

Billable Hour

A unit of professional time spent directly serving a client and recorded against a specific matter for invoicing, typically tracked in six-minute (tenth-of-an-hour) increments.

Contingency Fee

A fee arrangement in which the attorney is paid only if the client wins or settles the case, typically taking a percentage of the recovery (commonly 33–40%).

Docketing System

A calendar and tickler system law firms use to track every court deadline, filing date, and procedural milestone across all active matters, with redundant reminders to prevent missed deadlines.

Engagement Letter

A written communication from a professional services firm to a client confirming the scope of work, fee arrangement, responsibilities, and terms of the engagement before work begins.

Multi-State Compliance

The body of wage, tax, benefits, and employment laws a company must satisfy in every US state where it has employees working, which can differ substantially from one state to the next.

Employee Handbook

A written document distributed to every employee that communicates a company's policies, procedures, benefits, expected conduct, and employment terms.

PEO

A Professional Employer Organization is a firm that co-employs a company's workers, handling payroll, benefits, and HR compliance under a shared-employer arrangement in exchange for a per-employee fee.

EOR

An Employer of Record is a third party that legally employs workers on behalf of another company, typically used to hire internationally or in US states where the company lacks legal registration.

Employment Classification

The legal categorization of a worker as either an employee (W-2, subject to wage-hour laws) or an independent contractor (1099, self-employed), determined by a multi-factor test that varies by jurisdiction.

Benefits Administration

The ongoing operational work of managing employee benefits — enrollment, eligibility tracking, premium collection, COBRA, compliance reporting, and vendor coordination across health, dental, retirement, and ancillary plans.

OSHA Compliance

The body of workplace safety requirements employers must meet under the Occupational Safety and Health Act, including hazard communication, injury recordkeeping, required training, and posted notices.

Statement of Work (SOW)

A project-specific contract attached to a Master Service Agreement that defines the scope, deliverables, schedule, pricing, and acceptance criteria for one engagement.

Master Service Agreement (MSA)

A long-term contract that establishes the general legal terms between a service provider and a client, under which individual project-level Statements of Work are issued over time.

Retainer Model

A pricing model where a client pays a recurring fixed fee in exchange for ongoing access to a defined scope of services or hours, creating predictable revenue for the provider.

Utilization Rate

The percentage of a professional's available working hours that are billable to clients, used by service firms as the primary measure of individual productivity and firm capacity.

Deliverable Review

The formal process of evaluating a consultant's or service provider's output against the agreed acceptance criteria before the client accepts it and releases payment.

Scope Creep

The gradual expansion of a project's work beyond the originally defined scope, typically without corresponding increases in fees or timeline, which erodes margin and triggers team burnout.

Account Manager

The person inside a marketing or creative agency who owns the day-to-day client relationship, translates client needs into internal briefs, and coordinates the delivery team.

Client Retainer

A recurring monthly fee a client pays an agency for an agreed scope of ongoing services — retainer revenue is the primary driver of agency stability and valuation.

Campaign Brief

A structured internal document that translates a client's marketing goal into a concrete set of constraints, audiences, deliverables, and success metrics that the creative team can execute against.

Brand Guidelines

A written reference document specifying how a brand should be expressed visually and verbally across every channel — logo usage, color palette, typography, voice, and imagery rules.

Creative Review

The formal meeting or workflow where agency creative work is presented to the client for feedback and approval before it ships to production or market.

Client Lifetime Value (CLV)

The total revenue (or gross profit) a single client is expected to generate over the full duration of the relationship — a core metric for prioritizing acquisition investment and account management.

Context Switching Cost

The time and cognitive penalty incurred when a professional moves from one client engagement to another — typically 5–15 minutes per switch — which compounds into hundreds of lost hours per year across a multi-client workload.

Service Firm Benchmark

Industry-wide performance reference data — utilization rates, realization rates, revenue per head, client retention, growth rates — that small firms use to evaluate their own operational health.

Professional Liability Insurance

Insurance coverage (also called errors and omissions or malpractice insurance) that protects professional service providers against claims of negligence, errors, or omissions in their work.

Client Onboarding

The structured process of bringing a new client into a firm — collecting information, setting up systems, establishing expectations, and producing the first deliverable — that determines whether the relationship starts strong or struggles.

Client Concentration Risk

The risk to a professional services firm's revenue and continuity when a disproportionate share of total revenue depends on a small number of clients — typically considered concerning above 20% from any single client.