Real Estate Math

Annual Taxes

(Assessed Value � 100) * Tax Rate

Loan To Value Ratio (LTV)

Loan Amount � Sales Price or Appraised Value (Whichever is less)

Monthly Principle and Interest

Loan Amount/1000 * Mortgage Loan Factor

Annual Interest

Loan Amount or Principal Balance * Interest %

Balance After Payment

Monthly Principal & Interest Payment - Monthly Interest Portion = Monthly Principal Payment
Loan Balance - Monthly Principal Payment = Balance After Payment

Total Interest Over Life of Loan

Monthly Principal and Interest Payment * Total # of Payments in Loan = Total Principal and Interest Paid
Total Principal and Interest Paid - Loan Amount = Total Interest Over Life of Loan

Qualifying a Buyer Without Debt

Gross Monthly Income * Maximum Debt to Income Ratio (28%)

Qualifying a Buyer With Debt

Gross Monthly Income * Maximum Debt to Income Ratio (36%)

Sellers Net

Everything Seller Wants or Needs ($$$) � (100%-Commission Rate)

Rate or Loss of Profit

Original Value * Rate of Profit or Loss = Profit/Loss in $ (Selling Price - Original Value)

Commission

Sales Price * Commission Rate

Sales Comparison Approach

Used when valuing residential homes or land.
3-5 comps are found, adjustments are made to comps.
If subject property is superior, appraiser will subtract from comps.
If subject property is inferior, appraiser will add to comps.
Negative features = add to

Annual Appreciation or Depreciation

Sales Price of Comps before adjustments
Appreciation or Depreciation Rate = Annual Appreciation or Depreciation (� by 12
* the number of months since comp sold.)
Add if appreciation, subtract if depreciation.

Income Capitalization Approach

Used when valuing income producing property, value is determined by Net Operating Income (NOI.)
Potential Gross Income - Vacancy and Collection Losses = Effective Gross Income
Effective Gross Income - Operating Expenses = NOI

IRV

Net Operating Income � Capitalization Rate or Rate of Return = Value

Appraisers Value

Properties have an actual life, economic life, and effective age.
Actual Life: amount of time a property will remain standing.
Econmic Life: the amount of time a property is expected to remain useful/profitable.
Effective Age: age based on the remaining u

Before Tax Cash Flow/Cash Throw Off

Potential Gross Income - Vacancy and Collection Losses = Effective Gross Income
Effective Gross Income - Operating Expenses = NOI
NOI - Debt Service/Mortgage = Before Tax Cash Flow/Cash Throw Off

Square Foot/Acerage

Length (Depth) * Width (Frontage) = Total Square Feet
Total Square Feet � 43560 = Acres