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Idaho Plumbing Specialty Contractor Exam — Practice Test Guide

What This Practice Exam Covers

The Idaho Plumbing Specialty Contractor Exam consists of 100 questions answered within 240 minutes. The passing score is 75%, meaning you need at least 75 correct answers. The exam spans 13 topic areas drawn from the Idaho Division of Occupational and Professional Licenses Contractor's Business and Law Reference Manual, covering everything from financial accounting and employment law to insurance, project management, contracts, and mechanic's liens.

We offer two ways to practice. The free practice exam delivers 10 questions per attempt from a curated pool — a genuine sample of question style, difficulty, and format. You can retake it as many times as you like at no cost. The full practice exam mirrors the real exam precisely: 100 questions, a 240-minute time limit, and questions drawn from a pool of 490+ items, so each attempt produces a unique exam with no repeated sets. The full exam is the right tool for serious, exam-ready preparation.

What You'll Be Tested On

Sections 1–4 (Business Organization and Licensing) — 7 exam items combined

These early sections establish the legal and regulatory foundation of operating a contractor business in Idaho. Questions test knowledge of business entity types — sole proprietorship, partnership, LLC, and corporation — their liability characteristics, and registration requirements with the Idaho Secretary of State. Expect items on the differences between S Corporation and C Corporation tax treatment, Limited Partnership versus Limited Liability Partnership distinctions, and requirements for foreign entities doing business in Idaho. You will also be tested on DOPL's role in contractor licensing, the consequences of performing work without a required license, and how to select professional advisors including CPAs, attorneys, insurance agents, and bankers.

Section 5 (Accounting and Finance) — 20 exam items

This is the largest single content block on the exam and demands genuine numerical fluency. You must understand the bookkeeping process end-to-end, distinguish cash accounting from accrual accounting, and apply each to realistic contractor scenarios. Financial statements — balance sheet, income statement, and cash flow statement — are tested both in isolation and in relation to each other. Financial ratios are a consistent exam focus: liquidity ratios, the working capital ratio, efficiency ratios (including inventory ratio), leverage/safety ratios, and all three profitability ratios. Depreciation requires specific knowledge of straight-line methods, the Modified Accelerated Cost Recovery System (MACRS), and IRS Section 179 deduction rules. Project accounting under the completed contract method versus the percentage of completion method is heavily tested, including the conditions required for each. The Small Business Financial Status Checklist — daily, weekly, monthly, quarterly, and annual tasks — also appears as a source for exam items. (Source: Contractor's Business and Law Reference Manual, Section 5: Accounting & Finance)

Section 6 (Employment Law) — 20 exam items

Twenty items cover federal and Idaho employment law. You need to know protected classes and the specific statutes behind them: Title VII of the Civil Rights Act of 1964, the Age Discrimination in Employment Act of 1967 (ADEA), the Americans with Disabilities Act (ADA), the Equal Pay Act of 1963, the Genetic Information Nondiscrimination Act of 2008 (GINA), and the Pregnancy Discrimination Act. The ADA's reasonable accommodation and undue hardship standards are tested in detail, as are medical examination rules after a job offer. FMLA entitlements — including military caregiver leave — appear regularly. FLSA overtime rules and exemptions (including the computer professionals exemption) are testable. Federal contractor labor standards are a distinct sub-area: Davis-Bacon, the Copeland Anti-Kickback Act (including weekly payroll statements), the McNamara-O'Hara Service Contract Act, and the Walsh-Healey Public Contracts Act all appear. Idaho-specific wage payment law (§§45-608 through 45-613) and new hire reporting requirements round out the section.

Section 7 (Insurance and Bonding) — 20 exam items

Section 7 ties with Sections 5 and 6 for question volume. Workers' compensation coverage requirements in Idaho, employer guidelines, the corporate officer exemption, the casual employment exemption, and the penalties for operating without coverage — including misdemeanor classification — are all testable. Unemployment insurance covers experience rating, new employer standard rates, employer response to claims, and penalty rates for late payment. Surety bonds are tested by type: bid bonds, performance bonds (including the surety company's options upon default), and payment bonds under the Miller Act (1935). The independent contractor classification rules, including the constructive knowledge provision, are a reliable source of exam items. Additional coverage types including commercial general liability, automobile, builders risk, contractors pollution liability, and employment practices liability insurance also appear. (Source: Contractor's Business and Law Reference Manual, Section 7: Insurance)

Sections 8–13 (Estimating, Contracts, Project Management, Safety, Tax, Liens) — 33 exam items

Section 8 tests the full estimating sequence: conceptual, preliminary, and detailed estimates; quantity survey and takeoff; and pricing for labor, materials, equipment, subcontractors, and general expenses. Section 9 covers contract essentials, contract types (lump sum, cost plus, time and materials, incentive and guaranteed maximum, design-build), Idaho Code 29-115 on retention proceeds, and Idaho Code 9-505 (Statute of Frauds). Section 10 addresses all five project management phases, CPM scheduling, float time, Gantt charts, cost control, and quality control. Section 11 focuses on OSHA recordkeeping forms 300, 300A, and 301, reporting obligations, poster requirements, and voluntary programs including VPP and SHARP. Section 12 covers Idaho sales and use tax obligations, the contractor/retailer distinction, employee classification using the right-to-control test, and tax recordkeeping periods. Section 13 tests mechanic's lien filing deadlines, lien priority, the 6-month enforcement window, and Idaho Code 45-501 lien rights.

Worked Sample Questions

Question 1

Under the 2014 IRS Section 179 provisions, what is the limit on total equipment purchases before the deduction begins to phase out?

• A. $2 million
• B. $5 million
• C. $800,000
• D. $500,000

Correct Answer: A — $2 million

The 2014 Section 179 provisions set the phase-out threshold at $2 million in total equipment purchases. Purchases below that amount qualify for the full Section 179 deduction; once you exceed $2 million, the deduction reduces dollar-for-dollar. The $800,000 figure in option C was the previous threshold — a deliberate distractor for candidates who know the topic but not the updated number. Bonus depreciation at 100% may still apply above the phase-out limit, but only for new equipment. (Source: Contractor's Business and Law Reference Manual, Section 5: Accounting & Finance — IRS Section 179 Deduction (2014))

Question 2

As owner of an electrical contracting company with a federal construction contract, you must post the Davis-Bacon Act notice at your job site. Which statement correctly describes the posting requirement?

• A. The poster must be posted at the site of work in a prominent and accessible place where it can easily be seen by workers
• B. The poster only needs to be posted at the contractor's main office
• C. The poster must be mailed to each employee individually before work begins
• D. The poster must be submitted to the Department of Labor but does not need to be displayed on site

Correct Answer: A

The Davis-Bacon Act requires the poster to be displayed at the site of work, in a prominent and accessible location visible to workers. Main-office posting, mailing to employees, and DOL submission without on-site display all fail to meet the requirement. The contractor must also insert the poster requirement into any subcontract executed under the prime contract. (Source: Contractor's Business and Law Reference Manual, Section 6 — Required Workplace Posters, Davis-Bacon Act)

Question 3

What is the penalty rate assessed per month when Idaho quarterly unemployment insurance tax is not paid by the due date?

• A. 3% of the tax due or $15, whichever is greater
• B. 4% of the tax due or $20, whichever is greater
• C. 5% of the tax due or $25, whichever is greater
• D. 2% of the tax due or $10, whichever is greater

Correct Answer: B — 4% or $20, whichever is greater

Penalties accrue separately on each delinquent quarter at 4% of the tax due or $20, whichever is greater, for each month or fraction of a month the payment is late. The total penalty cannot exceed the amount of tax due for that quarter. Knowing the exact rate — not simply that a penalty exists — is what the exam requires. (Source: Contractor's Business and Law Reference Manual, Section 7: Insurance — Penalty for Late Payment)

How to Read Your Score

The passing threshold is 75%. On a first practice attempt, most candidates should treat their score as a diagnostic map rather than a final grade.

A score below 65% tells you that foundational work is needed across multiple sections — prioritize Sections 5, 6, and 7 first because they account for 60 of the 100 exam items. A score between 65% and 74% means you are competitive but not consistently reliable; identify which topic areas pulled your score down and return to the source material for those sections specifically. A score at or just above 75% on practice is encouraging, but it is not a comfortable margin — exam conditions introduce time pressure and subtle wording differences that can cost several points.

Because the full practice exam draws from a pool of 490+ questions, each attempt reveals different items. We recommend using multiple attempts to surface your weak spots systematically rather than drilling the same question set repeatedly. Track your per-topic accuracy across attempts; that pattern is far more instructive than any single total score.

Where Candidates Lose Points

The most common point losses on this exam fall into predictable patterns.

Confusing accounting method conditions. Section 5 questions on the completed contract method versus percentage of completion often hinge on a single condition — income limitation or uncertainty of outcome. Candidates who understand the concept but not the specific triggering criteria select the wrong method.

Misreading penalty and threshold figures. Section 7 items on unemployment insurance penalties and workers' compensation violations use specific dollar amounts and percentages. Candidates who remember the concept but blur the numbers — confusing the $20/$4% UI penalty with adjacent figures — lose points that should be automatic.

Conflating federal contractor labor standards. Davis-Bacon, Copeland Anti-Kickback, the Service Contract Act, and Walsh-Healey are four distinct statutes with different applicability thresholds, obligations, and posting rules. Section 6 questions frequently test which statute applies to a described fact pattern.

Skipping the lien timeline math. Section 13 questions on Idaho mechanic's lien deadlines — the 90-day filing window and the 6-month enforcement period — require reading the scenario dates carefully. Candidates who know the rules in the abstract still lose points by misidentifying when the clock started.

Running short on time. With 240 minutes for 100 questions, you have 2.4 minutes per question. Sections 5, 6, and 7 each carry 20 items and include multi-step ratio problems. Pacing through those sections without rushing the project management and contracts material at the end is a real skill worth practicing.

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