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B&P §7071.12 允许持照人以现金、本票或指定证券按其所替代保证金的全额缴存，且必须存入州财政官处；该存款按与担保保证金相同的规则应对索赔，若不足以全额清偿，则依 §7071.11(a) 按比例分配。法条中没有杠杆比率，因此 $5,000 的存款担保不了任何金额。也不存在部分替代：不能用现金与担保保证金拼凑出所需数额。私人银行的托管账户即使有存款保险，也不是向州财政官缴存。

RMO 是持照实体的主管人员；RME 则是该实体长期雇用的真正员工，而 16 CCR §823 要求非真正所有人的合格人员每周至少32小时、或企业营业总时数的80%（以较少者为准）实施直接监督与控制。持股10%以上恰恰是免除该工时要求的条件，因此那一项描述的是豁免情形而非 RME 本身。§7068.1 中根本没有亲属关系的要求。执照类别取决于该实体所取得的资质，而不是 RME 个人必须持有的执照。

错误分类会叠加两类责任。税务一侧是 IRC §3402 与 §3111 项下的联邦所得税预扣和雇主、雇员两部分 FICA，§3301 项下的 FUTA，以及通过 EDD 缴纳的加州 PIT、SDI 与 UI；只有在并非故意时才能适用 IRC §3509 的降低税率。劳动一侧是《劳工法》§226.8 每次故意违规 $5,000 至 $15,000、构成惯常做法时 $10,000 至 $25,000 的罚款，外加 §226(e) 的工资单罚款和无保险雇主的工伤赔偿风险。签署确认书毫无作用，因为《劳工法》§2775(a) 明确不理会当事人所用的名义。信息申报罚款与上述数额相比只是零头。

加州民法典 §8811 由 SB 61 新增，适用于 2026 年 1 月 1 日当日或之后订立的合同，将私人工程的留置金上限定为 5%——既是每笔付款的 5%，也是合同总价的 5%——并且适用于每一层级：业主对总承包商、总承包商对分包商，以及再往下（b）。「范围狭窄」指的两项例外是：非混合用途且不超过四层的住宅项目；以及在投标时或之前已收到书面通知、却未能提供由核准保险人出具的履约及付款保证金的分包商。为执行该条提起诉讼的胜诉方可获判律师费。(a) 说的是 2026 年之前的法律状态，那时私人工程的留置金确实纯属合同约定。(c) 正是该法要终结的 10% 惯例；如今它只在上述两项例外之内、以及 2026 年之前签订的合同上继续存在。(d) 数字对但范围错——公共合同法典 §7201 多年来已将多数州与地方公共工程限制在 5%，而 §8811 把同一上限延伸到了私人工程。

B&P §7071.6 经 SB 607 修订，自2023年1月1日起把承包商执照保证金从 $15,000 提高到 $25,000，§7071.9 项下的合格个人保证金同时提高到 $25,000；§7071.6.5 项下的 LLC 员工与工人保证金为 $100,000。$15,000 与 $12,500 都是2023年之前的数额，其中 $12,500 是2016年之前的水平。没有任何执照类别的保证金是 $50,000。

B&P §7071.9 规定，只要 RMO 或 RME 不是持照实体至少10%的真正所有人，就必须另行缴存 $25,000 的合格个人保证金：没有实际股权的合格人员在监督失职时损失有限，该保证金为公众提供第二条追偿途径。员工人数与 §7071.9 无关。持有多个分类改变的是可承接的工作范围，而不是保证金要求。自行承保工伤赔偿是《劳工法》§3700 另设的程序，有其自身的担保要求。

Markup is calculated on cost. $8,000 x 25% = $2,000 markup. Price = $8,000 + $2,000 = $10,000. (Note: a 25% markup is NOT the same as a 25% margin; a 25% margin would produce a price of $8,000 / 0.75 = $10,666.)

Gross profit = $15,000 - $12,000 = $3,000. Margin is profit divided by SELLING price: $3,000 / $15,000 = 0.20 = 20%. (The markup, by contrast, would be $3,000 / $12,000 = 25%.)

For a target margin, divide cost by (1 - margin). Selling price = $6,000 / (1 - 0.40) = $6,000 / 0.60 = $10,000. Check: profit = $10,000 - $6,000 = $4,000, and $4,000 / $10,000 = 40% margin. Marking up 40% on cost ($8,400) would give only a 28.6% margin, a common and costly error.

Take cost = $100. A 50% markup adds $50, giving a price of $150. Margin = profit / price = $50 / $150 = 33.3%. Markup and margin are different: markup is on cost, margin is on price.

Markup = profit / cost. Profit = $20,000 - $16,000 = $4,000. Markup = $4,000 / $16,000 = 0.25 = 25%. (The margin on price would be $4,000 / $20,000 = 20%.)

The markup that yields a given margin = margin / (1 - margin). Here 0.30 / 0.70 = 0.4286 = 42.9%. Check with cost $100: 42.9% markup gives price $142.90; margin = $42.90 / $142.90 = 30%.

$2,000 x 35% = $700 markup. Price = $2,000 + $700 = $2,700. Markup is added to cost.

Margin states profit as a percentage of the selling PRICE; markup states the same dollar profit as a percentage of COST. Because price is the larger base, margin is always the smaller percentage, which is why the first option has it backwards. The third option swaps the bases outright. The fourth would hold only if cost equalled price, which would mean no profit at all.

Margin 20% means profit is 20% of the $50,000 price = $10,000. Costs = price - profit = $50,000 - $10,000 = $40,000.

100% markup doubles cost: price = $3,000 + $3,000 = $6,000. Margin = profit / price = $3,000 / $6,000 = 50%. A 100% markup always equals a 50% margin.

Overhead recovery rate = annual overhead / annual direct costs = $120,000 / $600,000 = 0.20 = 20%. He adds 20% of each job's direct cost to cover overhead, then adds profit on top.

Overhead consists of indirect costs that keep the business running but are not tied to one specific job, such as office rent, administrative salaries, insurance, and utilities. Materials, on-site labor, and subcontractors are direct costs charged to a particular job.

Direct cost $10,000 + 15% overhead ($1,500) = $11,500 subtotal. Then 10% profit on $11,500 = $1,150. Final price = $11,500 + $1,150 = $12,650. Order matters: overhead first, then profit on the total.

Overhead is the indirect, ongoing cost of running the business — rent, office wages, insurance, trucks, licences — which cannot be billed to any single job and must be recovered across all of them through markup. Costs that scale with the job are direct costs, and materials and labour for a job are the clearest example of direct cost. What is left after every cost is paid is net profit, which comes after overhead rather than being it.

Net profit = revenue - direct costs - overhead = $800,000 - $560,000 - $160,000 = $80,000. Net profit margin = $80,000 / $800,000 = 10%.

When the overhead rate built into the markup is too low, every bid is priced below the true cost of doing business: the job can show a profit on its own sheet while the company loses money once real overhead is paid. Bidding high is the result of the opposite error, over-recovering overhead. Lower taxes follow a lower profit but are a symptom, not the harm. And subcontractors price their own overhead into their own numbers; nothing shifts the general contractor's overhead onto them.

Break-even revenue = fixed costs / contribution margin ratio = $90,000 / 0.30 = $300,000. At $300,000 revenue, the 30% contribution margin ($90,000) exactly covers fixed costs, leaving zero profit.

Break-even units = fixed costs / contribution margin per job = $60,000 / $2,000 = 30 jobs. Below 30 jobs he loses money; above 30 he earns profit.

Break-even is the sales volume at which total revenue equals total costs, fixed and variable together, so the result is neither profit nor loss. Covering overhead alone is not break-even, because direct job costs still have to be paid. Variable costs equalling fixed costs is an arbitrary coincidence with no meaning for profit. Maximum profit is a different point entirely, and it lies well above break-even.

Required revenue = (fixed costs + target profit) / contribution margin ratio = ($100,000 + $50,000) / 0.25 = $150,000 / 0.25 = $600,000.

Break-even revenue = fixed costs / contribution margin ratio. Raising the numerator (fixed costs) while holding the ratio constant increases the break-even sales volume: he must sell more just to cover the higher fixed costs.

Materials are 3,200 x $0.85 = $2,720 and labour is 40 x $45 = $1,800, so the direct cost is $4,520. $3,920 comes from pricing the labour at $30 an hour instead of $45. $4,840 comes from reading the lumber at $0.95 a board foot. $2,720 is the materials alone, with the labour line left out of the estimate.

Overrun = (actual - estimate) / estimate = (150 - 120) / 120 = 30 / 120 = 0.25 = 25%. Job costing compares estimated to actual to reveal a 25% labor overrun.

Job costing records the labour, material, subcontract and equipment cost actually incurred on each project and sets it beside the estimate, so the contractor learns which jobs made money and bids the next one better. Spreading overhead is what the overhead rate does, and it is an input to the bid rather than the purpose of job costing. Sales tax is computed from purchase invoices. And an hourly price for the next job is guesswork unless the job history behind it has been costed.

Volume in cubic feet = 30 x 40 x (4/12) = 30 x 40 x 0.333 = 400 cubic feet. Convert to cubic yards: 400 / 27 = 14.8 cubic yards.

Burden adds 35% to the base wage: $28 x 1.35 = $37.80 per hour. Estimators must use the fully burdened rate, not the base wage, or labor will be underestimated.

One coat: 2,400 / 350 = 6.86, round up to 7 gallons. Two coats need 2 x 6.86 = 13.7, round up to 14 gallons. Always round up when buying whole cans.

Markup = $18,000 x 12% = $2,160. Amount billed = $18,000 + $2,160 = $20,160. The general marks up subcontracts to cover coordination, supervision, and risk.

A contingency is money set aside inside the estimate to absorb unforeseen site conditions and the normal imprecision of estimating, so a small surprise does not have to become a claim. It is not profit: spending it leaves the margin intact, while treating it as profit means pricing the risk twice. Retention is the owner's money withheld from payments - five percent on public works under Public Contract Code section 7201, and capped at five percent on private contracts entered into on or after 1 January 2026 by Civil Code section 8811 - so it is money not yet received rather than a cost to fund. And owner-requested changes are paid through change orders at agreed prices, which is why they sit outside the contingency.

Working capital is current assets minus current liabilities, the short-term money actually available to run the business. Total assets minus total liabilities is owner's equity, which measures net worth rather than liquidity. Revenue minus operating expenses is operating profit, a period result rather than a balance. And cash minus payables ignores receivables, inventory and the rest of the current accounts, so it understates what is on hand to work with.

Working capital = current assets - current liabilities = $150,000 - $90,000 = $60,000. This is the cash cushion available for short-term obligations.

The structural cause is timing: wages and material invoices fall due weeks before the owner pays a progress billing, and retention delays part of the receipt further still, so cash drains even on a profitable job. Taking an early-payment discount does consume cash, but it buys a return and is a choice rather than the cause. Monthly billing lengthens the gap and makes the problem worse, without being its origin. Withholding retention from subs conserves the contractor's cash rather than draining it.

Accrual accounting books revenue when it is earned, but wages, suppliers and taxes must be paid in cash immediately, and money sitting in receivables, retention and work in progress is not available to spend. Double-recording revenue would be an error, not a reason. Depreciation is the opposite case: it reduces book profit without any cash leaving the bank. And retention is recorded as a receivable, an asset still owed, which is precisely why profit can look healthy while the bank balance does not.

2/10, net 30 means a 2% discount if paid within 10 days. $10,000 x 2% = $200 discount. Payment = $10,000 - $200 = $9,800. Taking early-payment discounts improves margins.

A cash flow projection lays expected receipts against expected disbursements week by week, so a shortfall is visible before it arrives and a line of credit or a change in billing can be arranged in time. Markup comes from the overhead rate and the target margin, not from a cash schedule. Work in progress is valued from job-cost records against the contract amounts. Depreciation follows the asset's cost and schedule and is a tax and book calculation, with no cash timing in it at all.

The current ratio is current assets over current liabilities, a measure of whether short-term obligations can be met; about 2:1 is comfortable and below 1:1 signals trouble. Liabilities over equity is the debt-to-equity ratio, which measures leverage rather than liquidity. Cash over sales is a turnover-style figure that ignores everything else owed within the year. Net income over total assets is return on assets, a profitability measure.

Current ratio = $200,000 / $80,000 = 2.5, expressed as 2.5:1. This means he has $2.50 of current assets for every $1.00 of current liabilities, a healthy short-term position.

The balance sheet is a snapshot at a single date showing assets, liabilities and owner's equity, and it obeys Assets = Liabilities + Owner's Equity. The income statement covers a span of time and reports revenue less expenses. The cash flow statement also covers a span, tracking money in and out rather than assets owned. A job cost report is internal and reports one project's costs against its estimate, not the company's financial position.

Assets = Liabilities + Owner's Equity is the foundation of the balance sheet. Everything the company owns is financed either by what it owes (liabilities) or by the owner's investment and retained earnings (equity).

Owner's equity = total assets - total liabilities = $500,000 - $320,000 = $180,000. Equity is the owner's residual claim after all debts.

The income statement, also called the profit and loss statement, reports revenue minus expenses over a month, quarter or year and ends in net profit or loss. The balance sheet is a point-in-time snapshot of assets, liabilities and equity. A trial balance is a working list of ledger balances used to check that debits equal credits, not a report of profit. The statement of owner's equity does cover a period, but it explains changes in equity rather than showing how the profit was earned.

The quick ratio removes inventory (and other less-liquid items) from current assets before dividing by current liabilities, giving a stricter measure of the ability to pay short-term debts with the most liquid assets. Construction inventory can be slow to convert to cash.

A current ratio of 0.8 to 1 means there are only 80 cents of current assets for every dollar of current liabilities, so the near-term bills exceed the near-term resources and lenders and sureties read it as a warning. A ratio below 1.0 is the definition of weak liquidity, not strong. A firm with no short-term debt would show a very high ratio, not a low one. And the current ratio says nothing about profit, which is measured on the income statement.

Under Business & Professions Code §7071.6, an active contractor's license requires a bond of $25,000 (an amount increased from $15,000 effective January 1, 2023). The bond protects consumers and employees, not the contractor.