This One Agreement Can Cost More Than You Think
What fund managers need to understand before agreeing to side letters.
Every fund manager eventually gets the request.
A larger investor likes the deal.
They like the strategy.
They like the team.
Then they say:
"We're interested, but we'll need a side letter."
That sounds simple.
It is not.
A side letter is a separate agreement between the fund and a specific investor that modifies, supplements, or provides additional rights alongside the standard fund documents for that investor.
Done correctly, side letters are a normal part of institutional fund management.
Done carelessly, one private agreement can affect economics, reporting obligations, co-investment access, governance rights, and potentially the rights available to other investors.
Quick note: This is educational, not legal advice. Every fund is different. Consult qualified securities counsel before making decisions.
The Most Important Thing You Need to Understand
A side letter is not a handshake accommodation.
It is a binding agreement.
Lead sponsors, GPs, fund managers, and capital partners need to understand exactly what rights and obligations they are agreeing to before they sign.
Institutional investors, family offices, endowments, and funds of funds often request side letters because their internal requirements do not fit neatly into the standard fund documents.
That may include:
- Custom tax reporting
- Quarterly reports by a specific deadline
- Leverage limits
- ERISA-related representations
- Co-investment rights
- Reduced fees
- Notice rights
- Special legal or governance protections
Those requests may be reasonable.
But reasonable does not mean harmless.
Pro Tip
Never treat a side letter as "just paperwork." If it creates a right, it generally creates a corresponding obligation.
1. The MFN Clause Is the Provision That Travels
The most favored nation clause, or MFN, is one of the most common side letter requests.
An MFN may give an investor the right to receive or elect certain more favorable terms later granted to other investors in the same fund, subject to the scope, eligibility requirements, and carve-outs negotiated in the provision.
This is where a one-investor accommodation can become a broader fund issue.
If a later investor negotiates a more favorable provision, the GP may need to review whether earlier investors with applicable MFN rights are entitled to receive or elect that same benefit.
That can apply to:
- Fees
- Reporting rights
- Notice rights
- Co-investment access
- Investor protections
Pro Tip
Before agreeing to an MFN, ask: "If I give this right to one investor later, who else could become entitled to it?"
2. Fee Concessions Can Change the Economics
Large investors often negotiate reduced management fees or carried interest.
That can make sense.
A larger commitment may help the fund reach a closing or increase the amount of investable capital.
But fee concessions need to be structured and documented carefully, with appropriate disclosure and consistency with the fund's governing and offering documents.
The bigger issue is whether the concession triggers applicable MFN rights for other investors.
A private fee reduction may not stay limited to one investor if other investors are contractually entitled to receive or elect similar terms.
If enough investors receive the concession, the GP's economics can change materially.
Pro Tip
Model the fund economics before agreeing to a fee concession, not after other investors seek the same economics through applicable MFN rights.
If you want help building a real capital raise process that actually works, book a call with RaiseLaw.
3. Reporting Rights Become Contractual Deadlines
Institutional investors may ask for specific reporting requirements.
Quarterly reports within a certain number of days.
Annual audited financial statements by a specific deadline.
Capital call notices with a longer advance notice period.
Tax reporting in a particular format.
ILPA-style reporting templates.
For a well-run fund, these may be manageable.
But once they are written into a side letter, they are no longer preferences.
They are contractual obligations.
Miss the deadline, and the issue is no longer simply customer service.
Depending on the terms and circumstances, it may constitute a breach.
Pro Tip
Do not agree to reporting obligations your fund administration process cannot reliably support.
4. Co-Investment Rights Need Allocation Rules
Co-investment rights may allow an investor to invest additional capital alongside the fund in specific deals.
Large investors often value these rights because they can increase exposure to specific investments, sometimes with economics that differ from those applicable to their fund investment.
But co-investment rights create allocation questions.
What happens if multiple investors have negotiated co-investment rights and the available co-investment capacity is limited?
Who gets access?
On what basis?
- Pro rata?
- First come, first served?
- Manager discretion?
If the applicable rights and allocation process are not clear, side letters can create disputes later.
Pro Tip
If multiple investors may receive co-investment rights, define the nature and limits of those rights and the applicable allocation process before the conflict exists.
5. Governance Rights Can Limit Manager Flexibility
Some investors may request additional consent, notice, advisory committee, or other governance rights through a side letter.
Those rights can create obligations that affect how quickly or independently the manager can act in certain situations.
The key is understanding exactly what requires investor involvement and whether those rights interact with the fund's governing documents or rights granted to other investors.
Pro Tip
Before granting special governance rights, understand exactly what decisions they could affect and whether the fund can administer them consistently.
Bottom Line
Side letters are common.
They are also serious.
Before agreeing to one, understand whether it affects:
- MFN obligations
- Fund economics
- Reporting deadlines
- Co-investment allocation
- Governance rights
- Operational capacity
The question is simple:
If every investor had this provision, would the fund still be manageable?
If the answer is no, slow down before you sign.
If you want a clear, step-by-step framework for structuring your fund, raising private capital, and building a scalable investment platform from initial strategy through execution, download the Fund Founder's Playbook.
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