Introduction
In a fund negotiation, a concession is priced less by what it costs with the investor who asks for it than by how far it travels afterwards. A fee break in one limited partner's (LP's) side letter can be claimed by others through a most favored nation (MFN) clause, and the model limited partnership agreement (LPA) of the Institutional Limited Partners Association (ILPA) gives that right to every investor, subject to four carve-outs. A placement agent therefore negotiates two things at once: the terms and their reach. The work runs from the anchor's first-close package through every later close, where new investors equalize with earlier ones, to the MFN elections after the final close.
Who Holds Leverage When Fund Terms Are Negotiated
Terms sit in two layers. The LPA binds every investor alike and is negotiated largely with the first-close group. Side letters are bilateral and record what one investor needs on top. Leverage in both comes from what an investor brings that the fund still lacks:
- Anchor or cornerstone investors bring size and timing, committing before the fund is proven.
- Large repeat LPs bring the re-up signal later investors read, and commitments that clear any size threshold.
- Investment consultants advise several clients, so one objection can stall several approvals.
- The manager holds the counterweight: strong distributions and demand above the hard cap let it refuse.
The shared reference point is ILPA Principles 3.0 (2019) with ILPA's 2020 model LPA; both are recommendations that bind a fund only once written into its documents. Leverage also moves with the market: Preqin reported in October 2024 that managers were offering first-close discounts, carry-free co-investment, and fee cuts, and Preqin data from December 2025 put the average fee for 2025-vintage and currently raising private equity funds at a record low of 1.61%, set in context by the article on management fees and carried interest.
Side Letters: What They Cover and How MFN Elections Work
What a Side Letter Typically Covers
Most side letters exist because one institution has a legal, tax, or policy position the LPA does not address; fewer exist because an investor had the leverage to ask for better economics.
- Side Letter
A bilateral agreement between a fund's general partner and one limited partner, signed at admission, that adds to, changes, or interprets the fund documents for that investor only. Other investors may be able to claim its terms through a most favored nation clause.
Requests fall into six recurring groups:
- Economic terms: management fee discounts or rebates.
- Co-investment rights: invitations to invest alongside the fund, often with reduced fees and carry.
- Governance: a seat on the limited partner advisory committee (LPAC).
- Reporting: extra data or environmental, social, and governance (ESG) information.
- Excuse rights: permission to sit out investments barred by sanctions, ESG exclusions, or regulation.
- Transfer rights: pre-agreed consent to transfer to an affiliate.
Co-investment and LPAC requests are the most contested because they allocate scarce things: deal access through co-investment, and a handful of seats on the committee described in LPACs, conflicts of interest, and ILPA principles. ILPA's Principles 3.0 push toward standardization: provisions common to most side letters should move into the LPA, LPs should limit requests to statutory or institution-specific needs, and co-investment rights granted by side letter should be disclosed to all LPs.
How MFN Elections Work in Practice
The clause and the model's carve-outs are laid out in the limited partnership agreement article. Practice often adds size tiers, so an LP can elect only terms granted to investors committing the same amount or less, and a one-off election process. A Morgan Lewis funds deskbook advises circulating side letters only after the final close, since repeating the exercise after every close snowballs, with written elections due within a set period, typically 30 days.
Disclosure is now mostly contractual: the Securities and Exchange Commission (SEC) rule on preferential treatment fell with the rest of its package in June 2024, as the article on the SEC private fund adviser rules explains.
Investor Classes and First-Close Fee Tiers
Incentives granted one letter at a time are hard to contain. The cleaner design writes them as investor classes: fee rates set by objective criteria, such as the close an LP joins and its commitment size, open to any investor that meets them. A first-close discount becomes a lower management fee rate for initial-close investors, a size discount a lower rate above a threshold, and the two can stack.
Take an illustrative Fund VI raising $2 billion at a headline 1.75% on commitments over a five-year investment period. First-close LPs get 15 basis points off, commitments of $150 million or more get 25, and an LP meeting both gets 40.
| Class | Who qualifies | Fee rate | Commitments | Annual fee |
|---|---|---|---|---|
| Standard | Later closes, under $150 million | 1.75% | $1.1 billion | $19.25 million |
| Early closer | First close, under $150 million | 1.60% | $500 million | $8.0 million |
| Size | $150 million or more, later closes | 1.50% | $250 million | $3.75 million |
| Early and size | $150 million or more, first close | 1.35% | $150 million | $2.025 million |
The anchor, alone in the last class, pays $2.025 million a year instead of $2.625 million, saving $3 million over the investment period. The manager collects $33.0 million a year instead of $35 million, a blended rate of about 1.65%, giving up roughly $10 million before the fee basis switches to invested capital: the price of an earlier, larger first close.
Subsequent-Close Equalization: Who Pays Whom
Why late investors pay to join is covered in the fundraising process from pre-marketing to final close; the mechanics decide who is compensated, and whether the true-up is fair.
The Three Payments a Late Investor Makes
Under ILPA's model LPA, a subsequent closing partner is treated as admitted at the initial closing. It contributes the capital that would have been drawn from it then, plus interest at a bracketed 8% a year on the non-fee portion from each earlier call's due date to its own. The investment share and interest go to the prior partners pro rata; the fee portion goes to the manager. The interest is not a capital contribution, while the late LP's preferred return runs from the initial closing, which is why earlier investors need it.
- Equalization Payment
The amount an investor admitted at a later close pays so that it holds the same share of the fund's investments and fees as if it had joined at the first close. Fund agreements following ILPA's model add interest on it, paid to earlier investors.
Suppose a fund closes first at $400 million, calls $40 million in month one and $20 million in month five, and charges 1.5% on commitments. In month seven an LP commits $100 million, taking the fund to $500 million, so its 20% share of the $60 million invested is 12% of its commitment:
| Payment | Amount | Goes to | Contributed capital? |
|---|---|---|---|
| Share of investments already called | $12.0 million | Earlier LPs, pro rata | Yes |
| Fee catch-up, seven months at 1.5% | $875,000 | The manager | Yes |
| Interest at 8% on the investment share | $373,000 | Earlier LPs, pro rata | No |
The first-close LPs get back $12 million, cutting their contributions from 15% to 12% of commitments, plus $373,000 for the months their capital worked alone.
Sequencing Concessions So They Do Not Cascade
The agent's defense is sequencing. Terms most investors want go into the LPA with the first-close group, so they never enter the MFN process. Economics are granted as classes with published criteria, not one-off letters. Before any side letter is signed, each term is tagged by MFN reach: which size tier could elect it and whether a carve-out applies. Late letters stay narrow, because a term conceded in the final weeks lands in the election summary every larger investor reads.
The anchor's rate shows what that discipline is worth. As the "early and size" class, 40 basis points costs the manager $600,000 a year. As a personal side-letter term under an untiered MFN with no economic carve-out, it could be claimed on the whole $2 billion, costing up to $8 million a year. Same words, more than ten times the reach, and controlling that reach is much of what the agent is paid for.
