How To Accept Payments For A Private Equity

A private equity business has the strictest sorting rule in this series: fund-level money, management fees, carried interest, capital flows, moves through fund administration and capital accounts per the fund's governing documents and applicable regulations, and no card ever touches it, properly. The card-and-invoice world serves the firm's other revenue: advisory fees, portfolio-company arrangements, and transaction-related services billed to entities. Knowing which dollars belong to which world is the entire payment article. Here it is.

Verified July 28, 2026 against the sources listed at the foot of this page.

How private equity money actually arrives

The worlds, separated. Fund-level flows. Management fees calculated and drawn per the fund's governing agreement. Carried interest distributed per the waterfall. Capital calls and distributions moving through fund administration on the fund's rails. All governed by the fund documents and applicable regulations, and all outside consumer payment tooling by design. Firm-level service revenue. Monitoring and advisory fees charged to portfolio companies per their agreements. Transaction and arrangement fees where the documents provide for them. Consulting and board-related arrangements, invoiced to businesses on terms. The sorting rule: fund money moves on fund rails, exactly as documented. Firm-level service revenue is where invoices, links, and modern receivables discipline live.

By the numbers (July 28, 2026)

Square prices this lane at 3.3% + 30¢ online or on a card-paid invoice in 2026. Take a $25,000 portfolio-company monitoring fee and the fee is $825; by ACH bank transfer (1%, capped at $10) it costs $10.00, a $815 difference. Fund-level money never touches these rails; this is firm-level service revenue.

The compliance frame: documents govern everything

Before mechanics, the frame. Every fee a private equity firm charges answers to documents and rules. The fund's governing agreement defines what the manager may charge and how fee income interacts with fund economics, offset provisions being the classic example. Portfolio-company agreements define service fees and their terms. Applicable adviser regulations govern disclosure, allocation, and documentation of fees and expenses. Payment mechanics never lead this parade. They follow it. Where any fee's treatment is uncertain, fund counsel and compliance outrank every invoicing convenience. The payment system's job is to execute what the documents permit, precisely, with records to match.

The portfolio-company lane: monitoring fees on professional rails

Where agreements provide for monitoring, advisory, or management services fees from portfolio companies, the billing runs on B2B discipline. Invoices per the services agreement, on its schedule, quarterly being common, itemized per its terms, referencing what the company's payables system needs. Payment links embedded for convenience and bank-transfer details prominent, since these tickets sit where bank rails belong. Terms tracked, escalations polite and calendared, and fee treatment, including any offsets the fund documents require, recorded so the compliance ledger and the receivables ledger tell one story. Square's invoicing carries the link-enabled convenience layer cleanly, per the recommendation above, inside the frame the documents set.

Transaction-adjacent fees: billed at the milestone, documented to the letter

Deal-related fees, where the documents provide for them, pay on milestone physics. Defined in the engagement or transaction documents. Invoiced when the triggering event completes, at the defined amount, with the calculation attached. The discipline is documentary. The fee's basis, its authorization in the governing documents, and its allocation treatment recorded at billing time, not reconstructed at audit time. Wire-scale amounts move on bank rails with confirmations filed. In this lane, the invoice is a compliance artifact as much as a receivable, and it is drafted like one.

The firm's operational payments: the unglamorous layer

Around the headline economics sits an operating business with ordinary payment needs, handled cleanly. Expense allocation between fund, firm, and portfolio companies per the documents and disclosed policies, the area where discipline is most scrutinized, with every allocation supported and consistent. Vendor and service payments on normal business rails. Event, conference, and co-investment-adjacent administrative collections, where they exist, handled through proper invoicing with clear descriptors. None of it is glamorous, and all of it is reviewed: an allocation policy applied consistently, with receipts and records that reconcile, is the operational hygiene the industry's examinations expect to find.

Records, examinations, and the standard the industry audits

The hygiene layer, examination-grade. Fee calculations reproducible from the governing documents. Invoices matched to agreements, payments reconciled to invoices, offsets applied and evidenced where required. Allocation records complete and consistent with disclosed policies. Retention per applicable requirements, and every dollar's path explainable in one glance, to an auditor, an examiner, or a limited partner asking a fair question. A private equity firm's payment system is, in the end, an evidence system wearing an accounts-receivable badge, and the firms that build it that way spend their examinations confirming rather than reconstructing.

Sources

• AGMS — Square 2026 Price Increase Analysis
• NerdWallet — Square Fees: Calculator and Pricing for 2026

What people ask me

Which private equity fees involve card or invoice tools?

Firm-level service revenue only: portfolio-company monitoring and advisory fees, and transaction-adjacent fees where documents provide, invoiced on business terms. Fund-level money moves on fund rails.

How do fund-level fees get paid?

Through fund administration per the governing agreement: management fees drawn as documented, carried interest per the waterfall, capital flows on the fund's rails, outside consumer payment tooling by design.

How should portfolio-company fees be billed?

Per the services agreement on its schedule, itemized with the company's payables references, links for convenience, bank rails for the amounts, and offset treatment recorded at billing time.

What compliance issues govern PE fee billing?

The documents and adviser regulations: what may be charged, how fee income offsets fund economics, and how fees and expenses are disclosed, allocated, and documented, with counsel outranking convenience.

What records should the payment system produce?

Examination-grade ones: fee calculations reproducible from documents, invoices matched to agreements, offsets evidenced, allocations consistent with policy, and every dollar explainable in one glance.

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