This study evaluated taxpayers’ satisfaction with the services of the Bureau of Internal Revenue (BIR) in business registration processing. The participants included BIR employees and taxpayers in Kalibo, Aklan. The study was conducted from December 2024 to January 2025. A total of 160 participants were selected through simple random sampling, comprising 100 taxpayers and 60 BIR employees. A descriptive research method was employed. The following summarizes the findings: 109 respondents (68.10%) were female, and 51 (31.90%) were male; 93 (58.10%) were married, while 12 (7.50%) were separated. In terms of income, 72 respondents (45%) reported earning between Php 9,100 and Php 36,400, while only 1 respondent (0.60%) earned more than Php 182,000. Regarding educational attainment, 120 (75%) were college graduates, and 1 respondent (0.60%) reported an "other" educational background. As for business type, 72 respondents (45%) operated sole proprietorships, while 10 (6.30%) were part of cooperatives. The overall taxpayer satisfaction rating with BIR’s business registration services was 4.43, interpreted as "very satisfied." The degree of problems encountered with these services was rated at 2.59, interpreted as "slightly serious."