Investor Pro Rata Waivers Explained
Your existing investors may have the right to keep their ownership steady by buying into your next round. That is a good thing until a new lead investor wants a bigger slice than the round can hold. A pro rata waiver is how that tension usually gets resolved. Here is what a waiver is, when you might need one and how to ask for it without straining the relationships that got you this far.
Key takeaways
- A pro rata right lets an investor buy enough of a future round to maintain their percentage ownership.
- A pro rata waiver is when an investor gives up that right for a particular round, often to make room for a new lead.
- Your documents decide who holds pro rata rights, how waivers work and whose consent you need.
- Ask early, explain the reason clearly and offer something reasonable where you can, such as a smaller allocation.
Pro rata rights tend to be forgotten until a round gets busy. In the early days, they feel like a polite promise: "if you raise again, I'd like the chance to invest." Then a new lead arrives with a strong offer and a firm view on how much of the round they need, and suddenly that promise affects the math. Founders who understand waivers ahead of time handle this moment calmly. Founders who meet it for the first time during a live raise often feel squeezed from both sides.
This guide is general information about startup financing, not legal or investment advice. The exact rights in your company depend on your documents and local law, so work with a startup lawyer before you ask anyone to sign a waiver.
What pro rata rights are
"Pro rata" means "in proportion." A pro rata right, sometimes called a participation right or preemptive right, gives an investor the option to buy a share of a future financing round in proportion to their existing ownership. If an investor owns a certain percentage of your company, their pro rata right lets them buy enough new shares in the next round to keep roughly that same percentage.
It is an option, not an obligation. The investor can take up all of it, some of it or none of it. Many investors value these rights because they let them keep backing a company that is doing well.
Where pro rata rights are written down
In a US priced round, pro rata rights usually sit in the investor rights agreement, which also covers information rights and registration rights. The NVCA publishes model documents that many US rounds start from. In the UK, similar rights often appear in the shareholders' agreement or the company's articles, and the BVCA publishes model documents. Some investors receive pro rata rights through a side letter attached to a SAFE or another instrument.
Because the wording differs from deal to deal, never assume. Look for answers to these questions in your own documents:
- Which investors hold pro rata rights, and is there a minimum holding to qualify?
- How is each investor's share calculated?
- How much notice must the company give before a new round, and how long do investors have to respond?
- Can the rights be waived, and does a waiver need each investor's consent or a majority vote of a class?
- Are certain issues of shares, such as option grants, excluded?
What a pro rata waiver is
A pro rata waiver is an agreement by an investor to give up their right to invest in a specific round. It does not usually remove the right forever. It normally applies only to the round in question, though the wording can vary.
Waivers can be full or partial. With a full waiver, the investor takes no part of the round. With a partial waiver, the investor agrees to invest less than their full pro rata amount, leaving the rest available for others.
Some documents let a defined majority of investors waive the rights on behalf of everyone in that group. Others require each investor to sign individually. This detail matters a great deal for your timeline, because chasing many separate signatures takes time.
Why a new lead may ask for waivers
A new lead investor often has a target ownership in mind and a set amount they want to invest. Meanwhile, you have a maximum you want to raise, because every extra share sold dilutes you and your team. When existing investors' pro rata rights are added on top of the lead's allocation, the round can become larger than you want or too small for the lead.
Common reasons a waiver comes up include:
- The round is oversubscribed. There is more demand than room, so someone has to take less.
- The lead needs a minimum stake. The lead will only invest if they reach a certain ownership level.
- You want to bring in a strategic investor. Space is needed for a partner who brings expertise or distribution.
- You want to limit dilution. Keeping the round size firm protects the founder and employee ownership.
Waivers are not a sign that anyone did something wrong. They are a normal part of balancing a round, and many experienced investors expect the conversation.
Common mistake
Agreeing to a new lead's allocation before checking your existing pro rata obligations. If you promise the lead a fixed slice and later find your documents require you to offer existing investors their share, you end up renegotiating under pressure. Check your documents and your cap table before you commit to any numbers.
How to ask existing investors for a waiver
Asking someone to give up a right they negotiated for can feel awkward. A clear, respectful process makes it much easier.
- Read the documents with your lawyer. Confirm who holds pro rata rights, how waivers work and whether a majority can sign for the group.
- Map the numbers. Work out each investor's full pro rata amount, the lead's requested allocation and the gap you need to close.
- Talk to your biggest supporters first. Call key investors before sending any paperwork. Explain the new lead, the round size and why space is tight.
- Offer options where you can. A partial allocation, a chance to invest alongside the lead later or a role in a future round can soften the ask. Only offer what you can deliver.
- Send a short written summary. Follow each call with an email that sets out what you are asking for and the deadline.
- Collect signatures through your lawyer. Use the waiver wording your lawyer prepares, and keep signed copies in your data room.
- Close the loop. Thank each investor and keep them updated after the round closes.
Pro tip
Never let an existing investor learn about a waiver request from a document they did not expect. A five-minute call first shows respect, and investors who feel respected are far more likely to say yes quickly.
A simple waiver request script
Adapt this wording for your own calls and emails:
"Hi Sam, I wanted to talk to you before anything goes out in writing. We have a term sheet from a new lead for our next round, and we're keeping the round to a fixed size to manage dilution. The lead needs a minimum allocation, which leaves less room than our existing investors' full pro rata. I'd like to ask whether you'd be open to a partial waiver, taking a smaller allocation this time. I'll send the numbers and the waiver wording from our lawyer after this call. Thank you for backing us from the start."
Pro rata waiver tracker template
Use this table to keep the process organized. The amounts below are made-up examples for illustration only.
| Investor | Has pro rata right? | Full pro rata amount (example) | Requested allocation (example) | Waiver type | Call done? | Signed? |
|---|---|---|---|---|---|---|
| Seed fund A | Yes | $300,000 | $150,000 | Partial | Yes | Pending |
| Angel investor B | Yes | $40,000 | $0 | Full | Yes | Yes |
| Accelerator C | Check documents | $60,000 | $60,000 | None | No | Not needed |
Add a "notes" column for anything an investor asked for, so promises do not get lost.
Hypothetical example
Imagine Leo, a founder raising a round with a new lead. The lead wants a large allocation, and Leo wants to keep the round at a fixed size. Adding up his existing investors' full pro rata amounts, he finds the round would go over his limit. He calls his seed fund first, explains the situation and offers them half of their pro rata. They agree. Two smaller angels are happy to waive in full, as they had already planned to sit this round out. Leo's lawyer confirms that the documents allow a majority of the group to sign a waiver, and the round closes on time with everyone still on good terms.
Things to think about before you agree
Waivers can be helpful, but they have consequences for everyone involved.
- Relationships. Early investors took a risk on you. Treat their rights seriously, even when the documents allow a majority waiver.
- Signaling. When a well-known existing investor waives fully, some new investors may wonder why. A short, honest explanation helps.
- Future rounds. Check whether a waiver applies only to this round or changes rights going forward.
- Fairness across investors. If you offer one investor a better deal, others may expect the same. Be consistent.
- Timeline. Collecting waivers takes time, so build it into your closing schedule.
If you are on the other side, as an angel or a small fund asked to waive, it is fine to ask questions: how big is the round, who is the lead and will you get a chance to invest later? A reasonable founder will answer openly.
Your pro rata waiver checklist
- Read your investor rights agreement, shareholders' agreement or side letters
- List every investor with a pro rata right and their full amount
- Confirm whether a majority can waive for the group
- Compare the lead's allocation with your target round size
- Call key investors before sending any documents
- Offer partial allocations or other options where possible
- Use your lawyer's waiver wording and track signatures
- Save signed waivers in your data room
- Thank investors and update them after closing
Frequently asked questions
Do all investors get pro rata rights?
No. It depends on what was negotiated. Some documents give pro rata rights only to larger investors, while smaller investors may have none. Check your documents and side letters to see who holds them.
Can an investor refuse to waive?
If the documents require each investor's consent, they can. If a defined majority can waive for the group, a single holdout may not block the round, but forcing a waiver can still damage trust. Talk to your lawyer about the exact rules.
Does a waiver remove pro rata rights forever?
Usually a waiver applies only to the specific round, but the wording varies. Read the waiver carefully and ask your lawyer to confirm what happens in future rounds.
Is a pro rata waiver the same as a pay-to-play clause?
No. A waiver is an investor choosing to give up a right for a round. Pay-to-play terms are different provisions that can penalize investors who do not invest in future rounds. Ask your lawyer to explain any such terms in your documents.
Related reading
The bottom line
Pro rata rights reward the investors who backed you early, and pro rata waivers let you make room for a new lead without blowing up your round size. The key is preparation: know what your documents say, run the numbers before you promise allocations and talk to investors personally before any paperwork arrives.
Handle waivers with the same care you would want if the roles were reversed. Do that, and you can close a strong round and keep the goodwill of the people who helped you get there.
