This is a genuinely contested question in economics and political philosophy, not something with a factual "correct" answer. Rather than searching for a definitive answer (since none exists), let me share the main considerations on each side so you can weigh them yourself.
Arguments for raising taxes on the wealthy:
•Ability to pay / diminishing marginal utility: A dollar matters less to a billionaire than to someone struggling to pay rent, so progressive taxation is often framed as more equitable.
•Rising inequality: Wealth and income inequality have grown significantly in many countries over the past few decades, and higher taxes on top earners are proposed as a way to address this.
•Revenue needs: Governments facing deficits or wanting to fund programs (healthcare, education, infrastructure) sometimes look to high earners/wealth as a revenue source since that's "where the money is."
•Effective tax rates: Some argue that due to loopholes, capital gains treatment, and avoidance strategies, many wealthy individuals pay a lower effective rate than their official bracket suggests, even lower than middle-class earners in some analyses.
•Social contract/public goods: The wealthy often benefit disproportionately from infrastructure, legal systems, and educated workforces that public spending creates.
Arguments against raising taxes on the wealthy:
•Incentives and growth: Higher marginal rates may discourage investment, entrepreneurship, or work effort, potentially slowing economic growth.
•Capital mobility: Wealthy individuals and corporations can relocate income, assets, or residency to lower-tax jurisdictions, potentially reducing the effectiveness of higher rates (this is debated — some studies show significant mobility effects, others show minimal).
•Investment and capital formation: Taxing capital gains or wealth more heavily could reduce the pool of capital available for investment, which some economists argue hurts productivity and wages over time.
•Already progressive: In many countries, high earners already pay a large share of total income tax revenue, even if their rate relative to income isn't dramatically higher.
•Efficiency concerns: Some economists argue broader-based taxes (consumption taxes, VATs) are more economically efficient than highly progressive income/wealth taxes, even if less directly "fair."
Where it gets complicated:
•"Wealthy" can mean high-income earners or high-net-worth individuals — these overlap but aren't identical, and taxing income vs. wealth/capital gains raises different issues.
•The debate often hinges on how revenue would be used (if it funds effective programs that boost mobility/growth, cost-benefit calculus differs from if it funds less effective spending).
•Empirical estimates of behavioral responses (how much the wealthy change behavior when taxed more) vary widely across studies and are hotly contested among economists.
My honest take: this is fundamentally a question of values (how much you weight equality vs. growth vs. individual liberty) combined with disputed empirical questions (how people actually respond to tax changes). Reasonable people, including economists, disagree significantly. I can go deeper into any specific piece — like what current effective tax rates by income bracket look like in a particular country, or specific proposals (wealth tax, higher capital gains rates, etc.) — if that would help you think it through further.