To calculate rent for a retail space, determine the base rent per square foot, multiply by the leased area, and add common area maintenance (CAM) charges (typically 50-100% of base rent). Include security deposits, utilities, and operating expenses if applicable. For taxes, compute property taxes based on the assessed value (average rate: $3.50 per $1,000 in the U.S.), sales tax (4.5-8.25% depending on state/local rates), and income tax (federal 21% for corporations, 5.5-13% for states).

Accurate calculations ensure financial clarity and compliance. Retail leases often include CAM fees to cover shared expenses like maintenance and insurance, which average 60-80% of base rent, per the National Association of Realtors (NAR). Property taxes vary significantly; for example, Texas imposes a 1.86% average rate, while New Jersey’s is 2.41%, according to the Tax Foundation. Sales tax impacts inventory purchases and customer transactions, with California at 7.75% and Texas at 6.25%. Income tax for pass-through entities like LLCs is now federal 21%, but states like Florida (0%) and Washington (0%) offer exemptions, incentivizing business location decisions. Missteps in these calculations risk penalties, legal disputes, or cash flow issues. The U.S. Small Business Administration (SBA) reports that 30% of new retailers face financial strain due to unanticipated tax liabilities, underscoring the need for meticulous budgeting.