The cleanest time to change fund administrators is the window after your audit opinion is signed and before the next year's fieldwork begins. For a December year-end venture fund, that is usually somewhere between May and October. You can move outside that window, and funds do it every year without incident. But the audit is the one part of the fund calendar where timing genuinely changes how much work a migration creates, so it is worth planning around rather than guessing at.

This is the narrow version of a bigger question. If you want the full sequence of a handover, start with our guide on how to migrate your fund administrator. What follows is only about the audit, because that is the reason most GPs give for waiting.

Why the audit is the constraint, not the capital call

GPs usually assume the risky moment is a capital call or a distribution landing mid-move. Those are easier than they look. A call is a dated event with a clear owner. Whoever issues the notice books the entries and reconciles the cash, and once the money has landed the event is finished. You can draw a line through it.

The audit does not work that way. It looks backwards across an entire fiscal year and it needs one continuous, defensible record of that year. It asks who booked an entry, on what basis, and where the support is filed. A year administered by two different providers is not a problem for an auditor, but it is a question, and questions cost time. The work is in making sure that question has a short answer.

Window one: after the opinion is signed

This is the default best case and it is the one to aim for.

The prior year is closed and signed off. Your opening balances are not a matter of judgment any more, they are the audited figures. Your new administrator loads them, ties them to the signed financial statements, and runs forward from a fixed point. There is no ambiguity about what the starting position was, because an auditor has already tested it.

It also means the outgoing provider has finished its last real obligation. Their audit support work is done. You are not asking a team you have just given notice to for a favour in six months.

If you are choosing a date on a calendar with nothing else forcing your hand, choose this one.

Window two: year-end has passed, fieldwork has not started

This is a reasonable second choice and more common than the first, because the decision to switch is often made when the annual statements arrive and disappoint.

Here your new administrator closes a year it did not book. That is entirely normal, and it is the point where the quality of the handover matters most. Balances alone are not enough. Your incoming provider needs the workpapers behind the closing entries: how the accrual for the audit fee was calculated, how management fees were computed and offset, how any carry accrual was arrived at, how portfolio marks were supported. Without that, they can restate the numbers but they cannot defend them, and defending them is exactly what the audit will ask for.

Ask for the workpapers explicitly, in writing, before the changeover date. Most providers will hand them over. Some hand over balances by default and workpapers only when asked. The difference between those two outcomes is entirely down to whether somebody asked.

Window three: during fieldwork

This is the one to avoid, and it is worth being honest about why rather than pretending it is fine.

During fieldwork there is an open request list, an auditor asking follow-up questions in real time, and a schedule with a signing date attached. If you change providers in the middle of that, the person who can answer the question fastest no longer works on your fund, and the person who now works on your fund is reading the file for the first time. Nothing here is catastrophic. It is just slow, and slow during fieldwork tends to mean a delayed opinion, which is the one audit outcome your LPs will actually notice.

If you are already committed to moving and fieldwork has started, do not cancel. Do one thing instead: get the outgoing provider's audit support obligation in writing before you sign anything with the new one. Name the specific commitment, which is that they will respond to auditor queries relating to their period of responsibility through to the signing of the opinion. A provider that will not put that in writing has told you something useful.

What the auditor actually needs from a split year

Regardless of which window you use, a year with two administrators needs a small, specific package. It is not long, and every item on it is ordinary:

The trial balance as at the changeover date, agreed by both providers
Partner capital accounts at that same date, per partner, with contributions, distributions and allocations shown separately rather than netted into one balance
The workpapers supporting the closing entries at that date
Evidence that opening balances tie to the prior year's signed financial statements
A named contact at the outgoing provider who will take an auditor's call

Notice what is not on that list: anything that requires goodwill from a provider you have just left. Each item is a document, and documents can be requested and confirmed received. That is the whole point of doing this before the changeover date rather than after it.

The tax question, briefly

The other worry that surfaces here is the K-1. There is no such thing as a split K-1. One partnership files one Form 1065, and each partner receives one K-1, prepared by your CPA rather than your administrator. Abax does not prepare tax filings, and no fund administrator should tell you otherwise. What the administrator owes the CPA is one continuous set of partner capital accounts for the full tax year, tying to the prior year's filed K-1s. If the audit package above is in order, the tax package is already in order too. They draw on the same records.

The cost of waiting for a perfect window

Waiting is not free, and it deserves to be counted honestly rather than treated as the safe default.

A year of staying put has a real price: the quarterly statements you correct yourself before they go to LPs, the LP questions you answer personally because nobody at the provider picks up, the reconciliation you rebuild in a spreadsheet every quarter because the report does not come out right. None of that appears on an invoice, which is exactly why it never gets weighed against the cost of moving. If you want to put a number on the visible half of it, our breakdown of fund administration costs is a starting point, though the hours you absorb yourself are usually the larger figure. The same goes for what you are sending LPs each quarter, which is worth measuring against normal LP reporting standards before you conclude the problem is unavoidable.

The realistic answer for most funds is not eight months of waiting. It is eight weeks. The gap between now and the right window is usually a quarter, not a fund cycle.

A short decision rule

Three questions, in order.

Has the opinion been signed for the most recent year? If yes, move now, this is your window.

Has fieldwork started? If yes, either wait for the opinion or secure the outgoing provider's audit support commitment in writing first.

Is the answer to both no? Then you are in window two. Move, and make the workpaper request part of the handover rather than an afterthought.

That is the entire framework. The audit is a scheduling constraint, not a reason to stay somewhere that is not working. Funds change administrators mid-life routinely, and the ones that go badly are almost always the ones where nobody asked for the workpapers.

If you are weighing a move and want to think through where your fund sits in the audit cycle, book a 20-minute call. Abax is fund administration built for emerging and micro VC funds, flat $5,000 per fund per year, with no AUM percentage and no per-LP fees.

Switching Fund Administrators Around Your Audit