Reference
Glossary
Plain-language definitions for every metric KnowVest calculates. 26 terms across home-buyer and rental-investor analysis. Hover or tap any term inside the analyzer to see the same definition inline.
Home Buyer
Terms specific to buying a primary residence.
- PITI — Principal, Interest, Taxes, Insurance
- The full monthly housing payment: loan payment (principal + interest) plus property tax and insurance escrowed monthly. Also includes mortgage insurance when the down payment is under 20%.
- PI — Principal & Interest
- The portion of the monthly housing payment that goes to the loan itself: paying down principal and the interest charged on it.
- PMI — Private Mortgage Insurance
- A monthly fee lenders add when the down payment is under 20% on a conventional loan, protecting the lender if you default. Falls off once the loan balance hits ~78% of the original price.
- Front-end DTI — Housing-to-Income Ratio
- PITI divided by gross monthly income. Lenders typically want this below 28-31% depending on loan type.
- Back-end DTI — Total Debt-to-Income Ratio
- PITI plus all other monthly debt payments (cars, student loans, credit cards) divided by gross monthly income. Lenders typically want this below 43-50% depending on loan type.
- Max affordable price
- The highest purchase price your income and debts can support at the standard back-end DTI limit for your loan type, given current rates and the taxes and insurance you provided. Estimate only — your lender will run their own underwriting.
- Cash to close
- The total cash you need available on closing day: down payment plus closing costs plus a reserve cushion lenders want to see in your bank account.
- Closing costs
- Fees due at closing: lender origination, title insurance, escrow, recording, appraisal, and similar. Typically 2-4% of the purchase price.
- Reserves
- Cash a lender wants you to have left after closing, sized in months of full PITI. Varies by loan type and property use; this report assumes 3 months.
- Readiness score
- A 0-100 estimate of how prepared your finances are for this specific purchase. Combines DTI strain, cash on hand, and credit; not a lender decision and not a credit score.
Investor
Terms specific to rental property analysis.
- DSCR — Debt Service Coverage Ratio
- Net operating income divided by the mortgage payment. Lenders generally want DSCR at or above 1.25× to approve a debt-service-coverage loan.
- Cap rate — Capitalization Rate
- Annual net operating income divided by the purchase price, shown as a percentage. Used to compare properties at different price points within the same market.
- Cash-on-cash return
- Annual cash flow divided by the total cash invested (down payment plus closing costs). Measures the return on the cash you actually put in, ignoring loan paydown and appreciation.
- NOI — Net Operating Income
- Gross rental income minus vacancy and operating expenses, before mortgage payments. The number a cap rate is calculated from.
- GRM — Gross Rent Multiplier
- Purchase price divided by gross annual rent. Lower is generally better; useful for quick screening before running full numbers.
- Break-even occupancy
- The minimum percentage of units that must be rented to cover all costs including mortgage. Below this percentage, you are paying out of pocket each month.
- Monthly cash flow
- What you keep each month after all rental income, vacancy reserve, operating expenses, and mortgage payment. Positive means the property pays you; negative means you feed it.
- Vacancy reserve
- The percentage of gross rent set aside for months a unit sits empty between tenants. Standard assumption is 5-10% depending on market.
- CapEx reserve — Capital Expenditure Reserve
- A monthly set-aside for big-ticket replacements: roof, HVAC, water heater, appliances. Different from routine maintenance and not optional over a long enough horizon.
- Rent comparable
- Nearby rental listings that signal what your unit could rent for. KnowVest pulls live comparables from RentCast within ~1.5 miles of the address you analyze.
- Comp average
- The mean rent of the most-similar nearby comparables. KnowVest picks the most specific cohort that has at least 3 comps — exact bed/bath when possible, otherwise within ±1 bedroom, otherwise all nearby.
Definitions are estimates and educational only — not financial advice. For investor lending guidelines (DSCR ratios, reserve requirements), consult a licensed mortgage professional. For buyer qualification (FHA/VA/conventional DTI limits), consult a licensed lender. More about KnowVest.