Bridge Financing: How to Extend Runway Between Rounds

The short answer: Bridge financing is a smaller, short-term raise that gives your company extra runway between major rounds. It works best when you have a clear milestone that will make the next round easier, and it works poorly when it only delays an unresolved problem.

What a bridge actually is

A bridge is usually raised from existing investors, sometimes with a few new ones, using a convertible note, a SAFE or a small extension of the last round. It is meant to be quick and light on paperwork. The money is not a new strategy. It is time, and time is only valuable if you use it to change the story you will tell the next investors.

When a bridge makes sense

• A key contract, product launch or metric is close, and a few more months would let you show it.
• Market conditions have slowed fundraising, but your business is performing.
• You are in the middle of a larger round and need to keep operating while it closes.
• Your current investors believe in the plan and are willing to support it.

When it does not

If growth has stalled, costs are too high or the product has not found customers, extra runway can simply postpone hard decisions. New investors often read a bridge as a signal, and an unexplained bridge can look like a company that could not raise a full round. Be ready to explain what the extra time will deliver and why insiders are backing it.

How to structure it

Keep the terms simple and consistent with your existing cap table. Convertible instruments with a discount or cap are common because they avoid arguing about valuation when the business is between milestones. Think about how the bridge will convert, how much dilution it adds, and whether earlier investors receive any advantage that later investors will resent. Treat all of this as a negotiation in which you want everyone to remain on side.

Size it honestly. A bridge that is too small forces you to raise again almost immediately, while one that is too large can crowd out the next round. Many founders work backward from the milestone, add a sensible buffer, and ask for that amount.

Alternatives to consider

Before taking a bridge, look at cutting costs, collecting receivables faster, negotiating customer prepayments, or using non-dilutive options such as equipment financing or government programs. A mix of these can extend runway without adding more equity. Because bridge instruments carry legal and tax consequences, talk to a qualified lawyer and accountant before you close one.

Keeping investors confident

Share a clear plan with dates, report progress against it, and tell investors early if something slips. Trust built during a bridge often carries into the next round.

Need growth capital in Canada?

Launch Capital is a Toronto venture capital firm and family office providing growth capital to Canadian technology companies. We are operators who have built and exited companies, so we know the pressure of running a company between rounds. If that is where you are, send us your pitch. It takes two minutes and no deck is required.