This is a question of political and economic philosophy where reasonable people disagree based on differing values, priorities, and interpretations of evidence. I can lay out the main considerations on each side rather than advocate for one answer.
Arguments for raising taxes on the wealthy:
•Revenue needs: Many countries face large deficits or underfunded public priorities (infrastructure, healthcare, education), and taxing high earners/wealth is one lever to raise revenue without affecting lower- and middle-income consumption.
•Inequality: Wealth and income inequality have grown substantially in many developed economies over recent decades, and progressive taxation is one tool to address this.
•Diminishing marginal utility: A dollar matters less to someone with $50 million than to someone living paycheck to paycheck, which some use as an ethical argument for progressive rates.
•Effective vs. statutory rates: Some high earners—especially those whose income comes from capital gains or who use complex tax strategies—pay lower effective rates than their statutory bracket suggests, which critics see as unfair.
Arguments against raising taxes on the wealthy (or for keeping/lowering them):
•Investment and growth: Higher taxes on capital or high incomes could reduce incentives to invest, start businesses, or work additional hours, potentially slowing economic growth.
•Capital mobility: Wealthy individuals and capital are more mobile than other tax bases; very high rates can encourage relocation, tax avoidance, or shifting of assets, sometimes reducing net revenue.
•Already progressive systems: In many countries, top earners already pay a disproportionate share of total income tax relative to their share of income, which some argue is already sufficiently progressive.
•Double taxation concerns: Taxes on dividends, capital gains, or estates are sometimes viewed as taxing already-taxed income a second time.
Empirical complexity:
Economists disagree on specifics like the revenue-maximizing top tax rate, the elasticity of taxable income among high earners, and how much tax changes affect growth versus simply redistributing existing activity. Historical comparisons (e.g., higher top marginal rates in the mid-20th century U.S.) are often cited by both sides but are complicated by different tax structures, loopholes, and enforcement at the time.
If you want, I can look into specific current proposals (e.g., wealth taxes, changes to capital gains rates, or minimum tax proposals for billionaires) and summarize the debate around them, or dig into recent data on effective tax rates by income group.