Millionaires Surtax Act: New 10% Surcharge on High Earners Kicks in 2027

Alright, let's talk about money, specifically big money, and a new piece of legislation aiming to get a bit more of it from the top earners. We're looking at the 'Millionaires Surtax Act,' which is pretty straightforward about what it wants to do: slap an extra 10% tax on the incomes of high-earning individuals. This isn't happening tomorrow; it's set to kick in for tax years starting after December 31, 2026. So, while it's not immediate, it's definitely on the horizon for those making serious bank.

Who's Getting Tagged?

So, who exactly are we talking about here? This isn't for your average paycheck. The 10% surcharge applies to individuals, not corporations, whose "modified adjusted gross income" crosses some pretty high thresholds. If you're married and filing jointly, or a surviving spouse, you'll see this surcharge on income over $2,000,000. For everyone else—single filers, heads of household, or married filing separately—the threshold is over $1,000,000. Basically, if your income is hitting seven figures or more, this bill is looking at you. This is a direct hit on the pockets of the highest earners, potentially shifting more of the tax burden to them.

The Nitty-Gritty of Income Calculation

Now, about that "modified adjusted gross income" (MAGI) they're talking about. It's your regular adjusted gross income (AGI), but with one key difference: you get to subtract any deduction allowed for investment interest. Think of it this way: if you borrowed money to make an investment, and you can deduct the interest on that loan, that deduction reduces the income amount this surcharge is calculated on. For estates and trusts, there’s a specific way their AGI is figured out, but for most individuals, it’s about that investment interest. This detail matters because it means the effective income level at which the surcharge hits might be slightly higher for those with significant investment-related debt, as outlined in Section 2 of the bill.

Special Cases and What This Tax Isn't

The bill also carves out a few special rules. If you're a nonresident alien, only the income you're already paying U.S. tax on counts towards this surcharge. For U.S. citizens or residents living abroad and using the foreign earned income exclusion, your threshold for the surcharge gets reduced by the amount of that exclusion. And good news for some charities: the surcharge doesn't apply to trusts entirely dedicated to charitable purposes. Importantly, this surcharge isn't treated like a regular income tax for things like tax credits or the alternative minimum tax. What this means is you can't use it to reduce other tax liabilities you might have, nor does it factor into calculating your alternative minimum tax. It's a standalone hit, designed to increase government revenue, potentially for public services or deficit reduction, by directly taxing the highest income brackets, as specified in Section 2.