Tax deferral in investing: what's deferred, what isn't, and why

Friday dinner. A friend mentions he moved money from one fund to another in his trading account, because the old one "wasn't pulling its weight". 100,000 ILS came out of the old fund. About 90,000 ILS went into the new one. "Where did ten thousand go?" he asks, half laughing. The answer showed up a few days later in the trade confirmation: tax on the gain had been deducted on the day of the sale.

He did nothing foolish; he just didn't see the tax as part of the decision. Behind that sits a belief that's easy to agree with: "Tax is tax. You pay it at the end either way, so what difference does it make when?"

One more rule to remember? Not quite

Part of you doesn't want another rule. "Taxation" sounds like a whole world of clauses, and "it's complicated" saves you the check; that quiet is easy to understand. Part of you wants to keep more of your own money, not through tricks, just through decisions made with open eyes.

Both are right, each in its own way, and there's good news for both: this isn't a new rule. It's one question, asked before every switch.

"Tax is tax" forgets about time

The trouble with "you pay at the end either way" isn't that it's false. It's that it forgets time. Money that goes to tax today stops working for you today. Money whose tax is deferred keeps growing, along with the rest, until its turn comes. It's the same mechanism as compound interest, applied to an amount not yet paid.

So why didn't you weigh it? Because the tax is deducted quietly on the day of the sale, and it appears on a confirmation, not on the screen where you make the decision. It didn't work, and not because of you: nobody ever presented the tax as a cost of the decision itself.

This is general information, not personal or tax advice, and the rules change. Choosing a track, transferring, or withdrawing from a kupat gemel (קופת גמל, a provident fund) or keren hishtalmut (קרן השתלמות, a tax-advantaged savings fund) is a personal decision, and this article only explains how the instruments work. By law, pension advice requires a pension adviser's licence. A licensed pension adviser can look at your case.

What a tax event is, and who deducts

A tax event is the moment the law treats your gain as realised, and in investing it's usually the moment of sale. While you hold, the gain exists on paper. When you sell at a gain in a trading account, the tax arrives, and with an Israeli bank or broker it may be withheld at source on the day of the sale, as it was for the friend. The Israel Tax Authority publishes the exact withholding rules.

How much? According to the Tax Authority, capital gains tax on a real gain is 25%. Tax and pension figures are as of September 2026; ceilings update yearly. How it's calculated, and what "real" means, is in the capital gains tax article.

Wrappers that defer tax, and what happens when you switch tracks

Some accounts are built like a wrapper: kupat gemel, keren hishtalmut, kupat gemel lehashkaa (an investment provident fund). Inside the wrapper, moving between investment tracks is usually described as a move within the fund rather than you selling a security, so not a moment when tax is deducted, and the full amount keeps working until you withdraw. Whether that holds for your fund and track, and on what terms, is something to check with the Tax Authority and the Capital Market Authority before relying on it; the tracks themselves can be compared on Gemel-Net and Pension-Net. The instrument has its own article.

Deferral versus exemption

Here's the second common mistake, in the other direction. Deferral is not exemption. In a wrapper that defers tax, the tax usually arrives at the end, on withdrawal, except in cases the law sets. The best known is the keren hishtalmut: according to the Tax Authority, its gains are tax-free after six years, within the ceilings. Tax and pension figures are as of September 2026; ceilings update yearly. In a kupat gemel lehashkaa, a lump-sum withdrawal is treated differently from an annuity, and the Tax Authority publishes the current conditions.

So the fair comparison is always after tax both ways: not a full amount against a reduced one, but what's left at the end of each path once all the tax is paid.

The calculation: the same investment, twice

An example, with labelled assumptions. A trading account holds 100,000 ILS, of which 60,000 ILS was invested and 40,000 ILS is gain. For illustration only, we apply 25% to the whole nominal gain; the actual tax is on the real gain, so the true result depends on inflation. An assumed annual return of 5% over 15 years is a modest assumption for the calculation, not a forecast, and it's the same in both runs.

• Run A, switch now: 10,000 ILS goes to tax today, and 90,000 ILS keeps working.
• Run B, defer: 100,000 ILS keeps working, and tax on the whole gain, old and new, is paid at the end.

Run A: 90,000 ILS after today's tax

Monthly deposit₪0

Years of saving15 years

The balance at the end, in this example

₪190,233

₪90,000 of it put in, ₪100,233 of it growth

The rate here is an assumption for the example, not a forecast.

Run B: 100,000 ILS, tax deferred to the end

Monthly deposit₪0

Years of saving15 years

The balance at the end, in this example

₪211,370

₪100,000 of it put in, ₪111,370 of it growth

The rate here is an assumption for the example, not a forecast.

Now take the end-of-period tax off both runs:

Under these assumptions, the gap is about 8,350 ILS. It isn't a forecast or a promise. It's the after-tax growth the ten thousand shekels that went to tax today would have earned over 15 years, had they stayed in. The calculation also leaves out management fees, which can differ between accounts; that's another line worth checking.

In AlphaHome: you can run the same calculation in the compound interest calculator, twice, with the same assumed return and horizon. The calculator has no tax or fee field, so you take the tax off by hand, as in the table. And the pension page (/app/pension) gathers your long-term accounts that sit inside wrappers, with each one's balance and fees.

After the switch, and before the next one

"We already switched, and already paid." You wanted to be rid of a fund you disliked, and you got relief. That's legitimate. Today: note how much tax was deducted, from the trade confirmation, so next time there's a real number in front of you. Next time: the question "is this a sale that triggers tax?" on a note beside wherever you place trades.

"We don't know which account sits where." "It's complicated" spares you one more task, which is why it's easy to stay there. Today: open the pension page, list your accounts on paper, and mark each one "inside a wrapper" or "outside", trading account included. Next time: mark a new account on the day you open it.

Asking when, not only how much

Decide on a switch without asking about tax, and you pay it without seeing it, and again at the next switch. Ask "Is this a sale that triggers tax, and if so, how much?" before every sale, and the tax becomes a cost of the decision, something you decide by.

Sometimes the answer is "yes, and it's worth it", because the reason for the switch is good enough. Sometimes the answer changes the decision. What people describe once the question becomes a habit is switching less, and on purpose. Where to hold money, and when to switch, is your decision.

Tax doesn't have to be your thing for you to ask it one question. Before every switch, you ask when you pay, not only how much.

This week: the same two runs in the calculator, with your own account's amount and gain, and the same assumed return and horizon in both. Take the tax off both at the end, as in the table, and only then write the gap on paper as one sentence that starts "Assuming...".