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Bridge rounds and extensions

By · Startup Decoded

A bridge round is a smaller raise that gives a startup enough cash to reach its next major round. An extension is more money added to a round that has already closed.

What is a bridge round?

A bridge round is a short-term funding round that helps a startup survive until it can raise a bigger round. It is usually small compared with the last round, and it is often raised from investors who already own shares in the company. The word bridge describes the purpose: it links today's cash position to a future milestone.

A bridge can happen at any stage. A seed-stage company may need one before Series A, and a late-stage company may take one before an IPO or a sale. The size is set by how many months of cash the company needs to reach its goal, plus a safety margin.

Why do startups need bridges?

Raising a major round takes time, often three to six months, and market conditions can change while founders are in talks. If a company's cash is running low and the next round is not ready, a bridge buys time. A bridge may also help a company reach a metric, such as a revenue figure, that would improve the valuation in the next round.

Bridges became common in India when funding slowed after 2021. Many companies that raised at high prices in the boom years needed more time to reach the numbers that new investors wanted. Existing investors often preferred to put in a bridge instead of letting a company fail or forcing a cheaper round.

What is an extension round?

An extension is a way of adding money to a round that has already closed, on the same terms. For example, a company might raise ₹20 crore in a seed round and later add ₹5 crore from a new investor at the same price. The extension is treated as part of the original round, usually called seed extension or Series A extension.

A bridge and an extension are not the same thing. A bridge is defined by its purpose, which is to reach the next round. An extension is defined by its terms, which match an earlier round. In practice, news reports use the words loosely and sometimes call the same deal both.

How are bridge rounds structured?

Most bridges use convertible instruments, such as convertible notes or iSAFE notes, because they are quick to sign and do not require agreeing a valuation. A note starts as a loan or a promise and turns into shares at the next priced round. To reward the investor, the note usually includes a discount, often in the range of 10 to 25 percent, and sometimes a valuation cap that limits the price at which it converts.

In India, bridges can also be done as compulsorily convertible debentures (CCDs) or preference shares (CCPS), where the investor gets shares fixed at a price. Rules under company law and foreign exchange law shape which instruments can be used, especially when the investor is outside India, so founders take legal advice before choosing.

  • Convertible note: a loan that converts into shares, usually with a discount.
  • iSAFE note: a simple Indian agreement that converts at the next priced round.
  • CCD or CCPS: instruments that convert into shares, common in Indian deals.
  • Straight equity: new shares at an agreed price, sometimes used in extensions.

What does a bridge signal to others?

Investors read bridges in two ways. If the existing investors put in fresh money and the company has made progress, it signals confidence. If only a small amount is raised, the company misses its milestones and new investors are absent, it may signal trouble. Outside investors often ask who participated and what the money was meant to achieve.

A bridge can also leave a legacy. Convertible instruments from a bridge will convert at the next round and add to dilution. If a company stacks several bridges, the effect on founders and early employees can be large, and a cap table with many notes becomes hard to read.

When should a startup avoid a bridge?

A bridge is a poor idea when the problem is the business itself, not the timing. If customers are not coming back, margins are negative on every sale or the market is too small, extra cash only delays the same outcome. In that case, founders may do better to cut costs, change direction (a pivot) or consider a sale.

A bridge can also be unwise if the terms are harsh. Very low caps, large discounts, interest rates that accrue and short deadlines can leave the founders with little after conversion. Founders should model the worst case before signing, not only the hopeful one.

How are bridge rounds treated in the Indian context?

Indian rules add a layer to a bridge. Convertible notes are treated as debt under company law and raising them may be limited to certain lenders or amounts, and foreign investors must follow exchange-control rules on how and when convertible instruments turn into shares. Many Indian deals therefore use compulsorily convertible debentures or preference shares, which are better suited to the rules. The details change, so founders should confirm them with a lawyer as of October 2026.

Because of these limits, bridges in India are often simpler than the US versions: a fixed-price extension from insiders, a short note from a few investors or a fresh issue of preference shares at the old price. Whatever the form, the board approves it, the cap table is updated and the new investors' rights are written down.

For readers of funding news, a few signs separate a healthy bridge from a rescue. Look for fresh money from new investors, a clear reason given by the company, a note of progress in revenue or users and a time frame for the next round. Be more careful when the bridge is described only as a continued commitment from existing investors, with no numbers and no stated plan. Neither is proof. Companies rarely explain the full background, and the same words can describe quite different situations.

What should founders think about?

Founders should check how much a bridge will dilute them once it converts, and whether it pushes the next round's price down. A bridge on poor terms can make the next round harder. They should also be clear about the goal: a bridge that only delays the same problem rarely works.

A good bridge has a plan with a date and a number. For example, reach a certain monthly revenue by the end of six months, then raise the next round. Without that, bridges can become a cycle where each one funds the interest in the last. This guide is general information and not legal or financial advice.

A worked example

Example, with made-up numbers. A company has ₹3 crore in the bank and spends ₹50 lakh a month, so it has six months of runway. Its Series A talks may take up to six months. Its existing investors put in a ₹2 crore bridge on convertible notes with a 20% discount. At the Series A the share price is ₹100, so the notes convert at ₹80. The ₹2 crore buys 2.5 lakh shares instead of 2 lakh, so the bridge investors receive 25% more shares than new Series A investors would for the same money.

Recent examples on StopDown

Questions people ask

What is a bridge round in simple words?

It is a small raise that gives a startup enough cash to reach its next big round.

What is the difference between a bridge and an extension?

A bridge is defined by its goal, which is to reach the next round. An extension is defined by its terms, which are the same as a round that has already closed. News reports sometimes use the words interchangeably.

Is a bridge round a bad sign?

Not always. It can show existing investors back the company. It can also signal trouble if the company has missed targets. Context matters.

How is a bridge round priced?

Often through convertible notes or iSAFE notes with a discount or a cap, so that the price is set at the next round.

Do bridge rounds dilute founders?

Yes, once the notes convert into shares. Founders should model the effect before signing.

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