Decoded Abbreviations & Math

Financial & Quantitative Acronyms

Quick explanations and free calculation tools for essential acronyms in real estate underwriting, clean energy storage, trades, and personal wealth.

BRRRR

Buy, Rehab, Rent, Refinance, Repeat

A real estate investment strategy focused on acquiring distressed assets, value-add renovation, tenant placement, and 75% LTV cash-out refinancing to recycle 100% of initial capital.

DSCR

Debt Service Coverage Ratio

The ratio of Net Operating Income to total annual principal and interest debt service payments. Lenders require DSCR ≥ 1.20x to approve commercial and non-QM loans.

TDEE

Total Daily Energy Expenditure

The total number of calories metabolized in 24 hours (BMR + physical activity + thermic food burn). Used to size precise caloric deficits.

SWR

Safe Withdrawal Rate

The percentage of retirement portfolio capital withdrawn annually without depleting assets over a 30 to 40-year horizon (commonly 3.5% to 4.0%).

ADR / RevPAR

Average Daily Rate / Revenue Per Available Room

Fundamental short-term rental and hospitality performance metrics that calculate net revenue across 12-month seasonality occupancy curves.

DoD

Depth of Discharge

The usable percentage of total battery kilowatt-hour capacity before recharging is required. LiFePO4 chemistry safely delivers 80-90% DoD.