Your investor has asked to spread their investment over a few tranches. Should you do it?

Normally when you do a funding round, your goal is to raise enough to give you 18 months of runway during which time you’ll hopefully get product-market fit, find customers, start selling and generate revenue.

But from the investor’s perspective, why should they give you 18 months’ worth of their money? What if they could give you just 6 months’ worth and then they check in later to see how things are going, and only if you’ve met certain milestones then they’ll give you more – that would certainly de-risk their investment.

But from your perspective that tranched investment, as it’s called, means you’re living hand to mouth. It’s a huge problem. Milestones are rarely met, at least not as originally defined. If you miss a milestone, your business could be dead.

At SeedLegals I see customers occasionally ask us about tranched rounds, so I figured it was time to make a video on that.

Tranched Rounds: What Founders Need to Know

A tranched round is an investment structure where capital is released in stages rather than all at once. For example, an investor might commit £300,000 but only provide £100,000 upfront, with the remaining funds tied to future milestones.

At first glance, this seems like a balanced approach. Investors reduce their risk by releasing funds only when progress is demonstrated, while founders still secure a funding commitment. However, in practice, tranched rounds often create more problems than they solve.

The Core Tension

The structure reflects two competing priorities:

• Founders want flexibility—raising enough capital upfront to iterate, pivot, and respond to customer feedback.
• Investors want control—limiting exposure by tying funding to performance milestones.

This misalignment can put founders in a difficult position, especially in early-stage startups where direction often changes rapidly.

The Problem with Milestones

Milestones are rarely as predictable as they seem. A startup might agree to revenue targets, only to discover that customers prefer a different pricing model—such as switching from one-off sales to SaaS subscriptions. While the business may be progressing well, it could still miss the agreed metrics.

When milestones aren’t met, founders face uncertainty:

• Will the investor release the next tranche anyway?
• Should the company start raising new funds?
• What valuation should be used if the round is incomplete?

This uncertainty can become existential if the company is running low on cash while waiting for the next tranche.

The Downside Risk

Tranched rounds can leave startups “living hand to mouth.” If a milestone is missed—or even just delayed—the company may run out of money before securing the next payment.

Even worse, if an investor decides not to release funds, legal enforcement is rarely practical. Suing an investor is costly, time-consuming, and damaging to the company’s reputation, often taking longer than the startup can survive.

Misaligned Outcomes

Another issue is that milestones can fail to reflect real progress. A company might grow users rapidly but delay monetisation, or achieve different—but equally valuable—success metrics. If these don’t match the agreed milestones, the investor still has an “out,” regardless of the company’s actual performance.

A Better Alternative

Instead of tranched rounds, a more founder-friendly approach is to:

• Raise the full investment upfront.
• Optionally allow investors to top up later at the same valuation.

This removes the pressure of milestone-based funding while still giving investors the opportunity to increase their stake if the company performs well. Crucially, there’s no obligation on either side—reducing risk and complexity.

Conclusion

While tranched rounds may appeal to investors, they introduce significant uncertainty and risk for founders. Milestones can be misaligned with real business progress, and delayed funding can threaten a startup’s survival.

For most founders, raising capital upfront and keeping future investment optional is a safer and more flexible path.