The three letters that move your interest to another basket

High-taxed income is passive income on which the foreign tax, after expenses are allocated to it, exceeds the highest US tax that could be imposed on that income. The instructions put the test in exactly those terms.

Where it applies, the item is not passive income at all. It belongs in the general category instead.

To stop the passive basket collecting high-taxed income as a shelter for everything beside it. Without the rule, a single high-taxed item could carry enough credit to shelter a pile of lightly taxed passive income beside it.

Moving the item to the general basket breaks that pairing. The credit goes where the income goes.

The separate baskets exist for the same reason. Congress split the credit by type of income so that tax on one kind could not shelter another, and this rule patches the gap that split left.

The rule is mechanical rather than discretionary, which matters. Nobody chooses it and nobody can decline it.

So treat it as part of the sorting exercise rather than as a planning option. It happens at the classification stage.

Because British rates on investment income run above the top American rate once somebody is into the higher or additional band. The comparison is to the highest US tax that could apply, not to what the taxpayer actually paid.

Savings interest is the obvious candidate for high-taxed income. Our note on UK savings interest covers how it reaches an American return in the first place.

Rental profits from British property can qualify too, depending on the expenses allocated against them. Our note on UK rental income covers the computation.

So an American here with ordinary British savings may hold high-taxed income without having done anything unusual.

Expenses come off first. The test for high-taxed income looks at the foreign tax after allocating and apportioning expenses, not at the headline rate on the gross amount.

That allocation can decide the outcome. An item with heavy allocated expenses may fail the test where the same gross income would have passed it.

The regulation carries the detail, and Publication 514 works through the arithmetic.

So compute the expenses before deciding the basket. Doing it the other way round produces a classification that may not survive.

It is the label you write, not a calculation. The letters go on line i of two separate forms, and the amounts move between them.

The form itself carries the categories across the top, and the line i box is where the label goes. Everything else follows the ordinary layout.

A separate column holds the high-taxed income in Part I. The same three letters identify that column on both the passive form and the one receiving the income.

Two forms are therefore in play for what feels like one item. That is the part people find counterintuitive.

So expect the return to carry more pages than the number of income streams suggests.

This is where most of the errors live. On the passive category form the high-taxed income goes on line 1a as a negative number in the HTKO column, taking it out.

The deductions definitely related or apportioned to that income go on line 6 in the same column, also negative.

On the form for the receiving category the same figures appear as positive numbers, in the HTKO column, on the same lines.

So the entries mirror each other. One form loses the income and the other gains it.

Check the pair of forms against each other before filing. The figures should cancel across them, and a mismatch is almost always a sign error rather than a computation error.

They follow the income, and they follow it with the same signs. On the passive form the related foreign taxes appear as a negative figure in parentheses.

On the receiving form they appear as a positive number. The credit has to sit beside the income it relates to.

Nothing is entered on lines 2 through 5 in the HTKO column. Those lines stay empty on both forms.

So the tax moves with the item rather than staying behind. That is the whole point of the exercise.

Take an American in London with a salary, a British savings account paying meaningful interest, and UK tax deducted at the higher rate on both.

Her salary is general category income and generates general category credit. Her interest looks passive at first glance.

Because the UK tax on the interest exceeds the top American rate that could apply to it, the interest counts as high-taxed income and moves to the general basket, carrying its tax with it.

The result is more income and more credit in a basket that may already have surplus credit. Whether that helps her depends on the rest of the return.

No, and this is the part worth thinking about rather than simply filing. Moving income into a basket that already has excess credit can waste the tax that traveled with it, because the basket has no capacity left to absorb more.

The reverse is also true. Where the general basket is short, the arriving income and tax can be exactly what rescues it.

The direction of the effect depends entirely on the rest of the return. Two people with identical British income can get opposite answers because their American positions differ.

Either way the move is compulsory, so the question is what to do about the consequences rather than whether to accept them.

So look at the carryover position alongside the classification. Our note on the carryover rules covers where unused amounts go.

Credit arriving with high-taxed income carries over inside the general basket, on the ordinary timetable. It does not return to passive later.

The amounts also keep their year. A credit arriving in the general basket carries the vintage of the year it arose, which matters when the oldest amounts start to expire.

So a year of heavy reclassification can change the shape of the carryover pools for a decade. That effect is easy to miss when looking at a single return.

Tracking the pools separately from the first year is the only way to keep this straight.

So record the basket alongside the amount. A carryover schedule without baskets is not a schedule.

Not directly, because the earned income exclusion reaches wages rather than investment income, and this rule operates on passive income. The two provisions sit in different parts of the return and neither triggers the other.

The interaction is indirect but real. Excluding earnings removes the income that general category credit would otherwise have offset.

So somebody using the exclusion may find the general basket emptier than expected, which changes what arriving income does to it.

Our note on choosing between them covers that comparison.

Look at the British tax rate on each investment item first. Anything taxed at the higher or additional rate is a candidate.

Then check what expenses attach to it, because the test runs on the figure after allocation. Interest usually carries few; rental profits usually carry many.

Software will often apply the rule correctly if the income is entered in the right place. It cannot fix an item entered in the wrong category to begin with.

So do the sorting by hand once a year. It takes an hour and it is the hour the rest of the return depends on.

It is not the same as the election some taxpayers make to treat high-taxed amounts differently in a controlled foreign corporation context. That is a separate provision with its own conditions.

Nor is it a relief. Nothing about the rule reduces anybody's tax by design, and it can increase it.

It is also not a reason to avoid British savings accounts. The rule sorts income; it does not penalize it.

So treat it as plumbing rather than policy. It decides where things go, not what they cost.

The first is leaving high-taxed income in the passive basket, because that is where it looks like it belongs. The rule is not optional and the classification is wrong.

The second is getting the signs backwards, which produces a return that balances to nothing and a credit that vanishes.

The third is moving the income without moving the tax. They travel together or the exercise fails.

A fourth is filling in lines 2 through 5 of the HTKO column, which should be left alone.

We start by classifying every income stream before computing anything, because the baskets decide the arithmetic that follows.

Then we allocate expenses, since the test depends on the figure after allocation rather than on the headline rate.

Our US federal returns work covers the classification, the forms and the carryover schedules behind them, and you can get in touch before the return is built rather than after it fails to compute.

So the order matters as much as the figures. Classify, allocate, then calculate.