D
Dr. Sarah Collins
Head of Tax and Policy Research
Former tax policy analyst focused on consumer tax planning, filing compliance, and scenario-based tax strategy.
Expertise
Tax PlanningPolicy AnalysisPersonal Finance
37 articlesView profile
Author Profiles
Meet the Contributors Behind CalcPortalPro
These profiles document who writes and reviews our finance guides, the expertise areas they cover, and their related work on the site. Use these pages when citing authorship or editorial responsibility.
J
James Peterson
Mortgage and Credit Strategy Analyst
Real estate and credit specialist covering loan structures, risk controls, and debt management frameworks.
Expertise
Mortgage AnalysisCredit RiskDebt Strategy
37 articlesView profile
Z
Ziblim Abdulai
Founder and CEO, LIVETECHTOOLS INC
Founder and CEO of LIVETECHTOOLS INC, a growing web brand known for mini online apps and games. Creator of CalcPortalPro and founder of the RandomTips publication at randomtips.exblog.jp.
Expertise
Web DevelopmentFinancial ModelingProduct SystemsSEO Content Architecture
36 articlesView profile