Why timing matters more than anything else when a founder sets up a trust

If you're a founder, the best time to put your shares into a trust is early, while they're worth almost nothing. Wait until there's a funding round or a sale on the table, and the same trust can mean a tax bill, less protection and far less growth captured. When you set it up matters more than where, or who runs it.

We say this to founders more often than almost anything else: a trust is mainly about timing. The legal structure, the country and the trustee (the person or firm who legally looks after the trust's assets) all matter. But none of them matter as much as when you set the trust up, compared with how much the shares are worth at that point.

Most founders hear "trust" and think "estate planning", something for later, after the sale, once there's real wealth to protect. That instinct is backwards, and it's the most common reason a founder's trust ends up doing far less than they hoped.

What does waiting actually cost?

Waiting can cost you a tax bill and most of the growth you hoped to shelter. Here's how it plays out.

Say you set up a trust with your founder shares while the company is still private and the shares are worth close to nothing. That does something a trust set up after a term sheet (the document that sets out the terms of an investment or sale) cannot. It moves the future growth of those shares outside your estate. It also takes them outside your personal tax residencyTax residenceThe country that treats you as living there for tax purposes, and so can tax your worldwide income. Each country sets its own rules; your passport doesn't decide it. exposure, meaning the tax claims of whichever country you live in. Depending on the jurisdiction, it can put them beyond the reach of most future creditors and claimants too. And the shares are valued so low that the transfer barely registers as a taxable event.

Now set up the same trust after a Series B (a later, larger funding round), or worse, after a signed acquisition agreement. The shares now have a real, defensible value. Moving them into a trust is often a taxable disposal in your home country. In plain terms: you can get a real tax bill just for moving something you haven't sold yet.

In several countries, transfers made once a sale is reasonably certain can also be unwound or ignored by the tax authorities under anti-avoidance rules. To them, the timing looks like what it is: an attempt to avoid tax on gains that were already locked in.

The trust still gets created and still holds assets. But instead of capturing years of future growth outside your estate, it holds an asset whose growth has already happened, taxed at your own rate, with a much smaller planning window left.

Why do founders leave it until "later"?

Usually it isn't a lack of awareness. In the early years you're focused on runway (how long your cash lasts), the product and the next raise. A legal structure for wealth that doesn't exist yet feels premature, especially when the company might never reach a sale.

That's understandable, and it's still the wrong trade. Setting up a trust early with low-value shares costs little: modest legal fees, simple paperwork and a low or negligible tax event. Setting it up late, once there's something worth protecting, costs far more for less benefit, and you can't buy the early window back.

There's a quieter reason too. Many founders assume a trust means giving up control of the shares, of decisions in the company, of the freedom to change their mind. It doesn't have to. A well-built trust can use what's called a reserved-powers or founder-retained structure, which is available in most modern trust jurisdictions. With one, you can keep the say over how the shares are invested and, in many structures, the votes attached to them. The trust still holds legal title, so you still get the estate and creditor-protection benefits.

Where are the grey areas?

Most of the points in this article turn on timing, and timing is exactly what tax authorities and courts look at. Nobody can give you a fixed cut-off date for "too late", so the lines below are judgement calls, not bright lines.

None of this means you can't proceed. It means you should understand the risk first and get advice on your own facts.

What does a trust do for a founder when it's done at the right time?

Done at the right time, a trust does four main things for a founder. Here they are one by one.

It moves future growth outside your estate. If the company's value goes up tenfold after the trust is set up, that growth sits in the trust. It's outside your personal estate for tax purposes. It's also outside the value counted if you later become tax resident somewhere with wealth or inheritance taxInheritance tax (IHT)Tax on what you leave behind when you die. In the UK it now follows long-term residence rather than domicile..

It builds a real barrier against personal claims. Divorce, lawsuits and creditors are what founders least want to think about and most need protection from. A trust in a strong asset-protection jurisdiction can hold your equity genuinely out of reach of a later claim against you personally. That works when the trust is:

• set up well before any claim is foreseeable,
• funded from legitimate sources, and
• run at arm's length by an independent trustee.

If you set it up after a dispute has started, or even become foreseeable, it typically won't work. Courts in most places look hard at timing for exactly this reason.

It simplifies what happens at a sale. When the company sells, the money lands in the trust instead of your personal account. Depending on where the trust and you are based, that can materially change the tax treatment of the sale. It also gives you a clean way to manage the proceeds across countries, rather than bringing a lump sum home to whichever country you happen to be tax resident in on completion day.

It settles succession once. Succession just means who gets what, and when. A trust set up early, with your actual family and wishes in mind, answers that once. You're not revisiting it under time pressure during a sale that already has plenty going on.

When is the window?

The ideal moment is early, before Series A (the first big funding round) if possible. It's certainly before any round that meaningfully re-prices the company, and always well before a sale process starts. Once you're in active fundraising with a clear valuation, or acquisition talks have begun, the transfer stops being a quiet bit of admin. It becomes a scrutinised tax and legal event.

If the window has already passed, the conversation isn't over. There are still structures that help, and setting up something now is better than setting up nothing. But we'll say it plainly: the earlier version of this conversation would have done more, for less. That's simply how trusts and growing assets work together.

The one-sentence version

A trust holding founder shares works best when there's plenty of future growth left to capture and as little scrutiny as possible on the transfer. Both of those conditions get worse, not better, the longer you wait.

This article outlines general principles across common trust jurisdictions and does not constitute legal or tax advice for any specific structure. Trust and tax treatment varies significantly by jurisdiction and by the founder's personal tax residency. Get advice specific to your facts before setting up a trust.