| Commission | commission = sale price × commission rate | A home sells for $420,000 at a 5.5% commission rate. $23,100 total commission |
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| Commission Split | agent share = sale price × total rate × listing/selling split × agent's split with their broker | Sale price $380,000, 6% total commission, split 50/50 between brokerages, agent keeps 70% of their side. $7,980 to the agent |
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| Annual Expense Proration | seller's share = (annual amount ÷ 12) × months owned | Annual property tax is $3,600. Seller owned the home for 5 months before closing. $1,500 seller's share, credited to the buyer |
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| Loan-to-Value Ratio | LTV = loan amount ÷ appraised value (or price, whichever is lower) | A buyer borrows $255,000 on a home appraised at $300,000. 85% LTV |
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| Down Payment from LTV | down payment = price × (1 − LTV) | Price is $340,000 with a 90% LTV loan. $34,000 down payment |
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| Discount Points | cost of points = loan amount × (points ÷ 100) | A $280,000 loan with 2 discount points. $5,600 to buy down the rate |
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| Monthly Interest (Interest-Only) | monthly interest = (principal × annual rate) ÷ 12 | $200,000 principal at 6% annual interest. $1,000 monthly interest |
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| Rectangular Area | area = width × depth | A lot is 90 feet wide and 150 feet deep. 13,500 square feet |
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| Square Feet to Acres | acres = square feet ÷ 43,560 | A parcel measures 87,120 square feet. 2 acres |
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| Transfer Tax | transfer tax = sale price × tax rate (often per $1,000 or $500 of price) | Sale price $500,000, transfer tax of $2 per $1,000. $1,000 transfer tax |
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| Capitalization Rate | cap rate = net operating income ÷ property value | A property has $48,000 NOI and is valued at $600,000. 8% cap rate |
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| Gross Rent Multiplier | GRM = property price ÷ annual gross rent | Price is $360,000, annual gross rent is $30,000. GRM of 12 |
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| Straight-Line Depreciation | annual depreciation = depreciable basis ÷ useful life (years) | A rental building's depreciable basis is $275,000 (residential). $10,000 annual depreciation |
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| Seller's Net Proceeds | net to seller = sale price − commission − closing costs − loan payoff | Sale price $450,000, commission $27,000, closing costs $4,000, loan payoff $210,000. $209,000 net to the seller |
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