Investing May 22, 2026 0 Comments

The Wealth Tax Trap: Why Some Strategies Bleed Your Bottom Line While Others Skyrocket Your Gains

Ever wonder why taxing the ultra-wealthy feels a bit like trying to catch smoke with your bare hands? Nick Maggiulli, COO of Ritholtz Wealth Management, dives deep into this perplexing issue in his eye-opening post, “Why Taxing the Wealthy is Harder than It Looks.” The crux? Wealthy individuals aren’t just sitting ducks; they’re nimble, savvy, and yes, extremely mobile. You slap a tax on their riches, and—poof—they might just shift it elsewhere, slipping through the cracks of legislation. It’s not just about the numbers; it’s a strategic chess game between governments and the rich, complicated further by historical attempts across the globe where wealth taxes either flopped or backfired. This article peels back the layers of wealth taxation—exploring its challenges, the fate of such taxes in various countries, and glimpses of what successful models look like. Ready to unravel why the richest keep dodging the taxman and what that means for your wallet and the future of fiscal policies worldwide? Let’s dig in. LEARN MORE

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Nick Maggiulli, the COO of Ritholtz Wealth Management and blog Of Dollars and Data has a pretty informative post Why Taxing the Wealthy is Harder than it Looks.

And the reason is because most of the rich is more mobile! If you tax them, then they would evaluate and move the money.

My personal thoughts is that there are more considerations. But anyway.

We are discussing wealth taxes here which means the more wealth you build, the more you get taxed.

Recently California proposed a one-time 5% wealth tax on billionaires, Washington state proposed a 9.9% tax on income above $1 million (taking effect in 2028), and NYC’s proposed surcharge on second homes worth over $5 million. When the US income tax was first introduced in 1913, the top 1% paid an effective rate of under 15%, it took over 30 years to exceed 40%.

There are many countries who tries to implement wealth taxes but eventually not many of them keep it.

As of 1990, 12 countries had net wealth taxes, but by 2017 only four OECD countries still levied them. Most repealed their wealth taxes because they weren’t effective at raising revenue and led to some capital flight.

Some countries that stopped:

Austria – Repealed in 1994
Denmark – Repealed in 1997
Germany – Repealed in 1997
Netherlands – Repealed in 2001
Finland – Repealed in 2006
Iceland – Repealed in 2006. Temporary reinstated the wealth taxes after GFC for emergency fiscal measure.
Luxembourg – Repealed in 2006

The main reasons:

Administrative complexity
Capital flight
Revenue fell short of expectations
Difficulty valuing illiquid assets like private businesses and art.

The 4 countries that still have it:

Norway – Norway levies 1% on net wealth above NOK 1.7 million (roughly €146,000), with 0.7% going to municipalities and 0.3% to the central government. For wealth above NOK 20 million, the rate rises to 1.1%. Norway raised about NOK 32 billion ($3.3 billion) from roughly 655,000 taxpayers in 2023. However it’s not without friction — after a 1% increase in Norway’s wealth tax, many high-net-worth individuals left the country. Several high-profile Norwegians relocated to Switzerland, which attracted domestic media coverage and became a point of contention in the 2025 election cycle.
Spain – Spain’s system is by some distance the most complicated in Europe. It operates on two overlapping levels: a regional net wealth tax and, since 2022, a national solidarity wealth tax. The regional tax is progressive, with rates from 0.16% to 3.5% on net assets exceeding €700,000. The solidarity tax then kicks in on top for those with wealth above €3 million. As an example, someone with €10 million in net wealth faces a solidarity wealth tax bill of €350,000 per year — on top of income and capital gains taxes — which has been a significant driver of emigration to the UAE, Portugal, or Switzerland. After Spain introduced the solidarity wealth tax, Portugal extended its tax regime for non-residents specifically because more Spanish taxpayers were considering changing their tax residence.
Switzerland – Switzerland’s wealth tax is set at the cantonal level, with rates ranging from 0.1% to 1% depending on which of the 26 cantons you live in. This decentralisation is actually a feature. The cantons compete to attract wealthy residents with lower rates, keeping the tax reasonable. Despite its low headline rates, Switzerland’s broad base generates substantial revenue — roughly €9.5 billion in 2023, representing 4.3% of total tax revenue, the highest share of any OECD country.
Colombia – Colombia’s wealth tax underwent a dramatic escalation at the end of 2025. After Congress struck down a proposed tax reform bill, President Gustavo Petro’s government declared an economic emergency and issued a decree slashing the wealth tax threshold from the equivalent of roughly $950,000 to about $530,000 — significantly expanding the taxpayer base to an estimated 102,000 individuals. On top of that, in early 2026 Colombia added a temporary corporate wealth tax of 0.5% (1.6% for financial, coal, and oil companies) on corporations with net equity above $2.9 million, to raise funds in response to climate-related events. Colombia is very much a work in progress, and the political instability around it makes it the most unpredictable of the four.

The Elements that Makes Some Taxes More Successful

The key pattern in successful policies is:

Start with a small tax then grow it over time.
Apply broadly on your base not just a small group.

Switzerland has a wealth tax ranging from 0.1% to 0.7% across its 26 cantons that has been successful. It works because it has low, predictable rates applied to a broad base of individuals, rather than a higher rate on a narrow group.

Research analyzing over 45 million US tax records from 1999–2011 found that the millionaire migration rate was just 2.4%, lower than the overall population migration rate of 2.9%. When modelling identical tax rates across all states, elite migration fell by only about 2%. This suggests most wealthy people are embedded in their communities and won’t move unless a policy is extreme.

NYC’s pied-à-terre tax is flagged as a likely success.

It’s an annual surcharge on second homes in New York City valued at $5 million or more, where the owner’s primary residence is outside NYC’s five boroughs. It targets non-residents specifically. If you are a full-time NYC resident, you are not affected regardless of how many properties they own in the city. Think of it as a tax on the Boston executive who keeps a Manhattan apartment for work trips, or an overseas investor with a Midtown condo sitting empty most of the year.

One-to-three family homes valued above $5 million face surcharge rates ranging from 0.8% to 1.3% depending on property value. For co-ops and condos with assessed values between $1 million and $3 million, a 4% surcharge would apply. The final rate structure hasn’t been locked in yet but likely based on a similar 2019 proposal, a sliding scale is the most likely structure, with properties between $5–6 million potentially subject to 0.5% annually, scaling up from there.

This tax is modest and applies to over 13,000 units, giving it the broad base and reasonable size that tends to work. Washington’s millionaires tax is seen as having a better chance than California’s precisely because it covers a much wider group of earners.

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