Finance separation is where the close cycle gets tested.

The close cycle is the hard date.

The buyer's hardest commitment in finance separation is the first independent close. The first close on Newco systems is the test of every other finance migration. If the general ledger is in, the subledgers reconcile, the consolidation runs, the tax provision lands, then finance has separated. If any one of those is still running on the seller's stack, the buyer is still inside the TSA.

Most buyers target month four or month five for the first Newco close. The first close is almost always longer than the steady state close, often 12 to 18 working days, because the team is exercising the new systems for the first time. The second close drops to 10 to 12 working days. By the sixth close, the team should be at the target run rate.

Parallel close, where the same period is closed on both seller and Newco systems, is the right risk mitigation for the first three months. After the third successful parallel close, single close on Newco systems is appropriate. Parallel close longer than three months becomes a permanent overhead and signals that the team is not confident in the Newco close.

The audit committee should see the parallel close results monthly. A miss against either the parallel comparison or the close calendar is a flag, not a problem to hide. Audit committees that see early misses can adjust resourcing before the year end close becomes a live risk.

The general ledger and the subledger migrations.

The general ledger migration is the central event. Chart of accounts conversion, opening balance migration, intercompany rebuild, currency revaluation. The decision that drives the timeline is whether Newco adopts the seller's chart of accounts or rebuilds. Adopting the seller's chart accelerates the timeline by 30 to 60 days at the cost of carrying forward legacy structure that may not fit the Newco's operating model.

Accounts payable is the highest volume subledger and the most likely to fail in cutover. Vendor master conversion, three way match configuration, payment file routing to the new bank. Cutover should happen at a quiet point in the AP cycle, typically the second week of a calendar month, not at month end.

Accounts receivable carries the customer relationship risk. Customers who get a new invoice from a new entity sometimes withhold payment until the change is verified. The buyer should notify the top 50 customers in advance and post a clean cutover notice 30 days in advance, with the new banking details available in writing.

Fixed assets, inventory, project accounting, lease accounting under IFRS 16 or ASC 842. Each has its own migration plan. The volume work is in fixed assets, where every asset record needs depreciation method, useful life, and historical accumulated depreciation. Sellers often hold this data in subsystems that are not migrated and have to be exported manually.

Consolidation and reporting on Newco systems.

The consolidation tool is often a separate decision from the general ledger. Many sellers run a dedicated consolidation system on top of their ERP. The Newco may choose to consolidate inside the ERP, choose a separate consolidation tool, or run consolidation in a spreadsheet for the first year. The right answer depends on the entity count, the reporting standard, and the audit risk profile.

Internal reporting is rebuilt on Newco systems. The seller's reporting layer is rarely portable, because it depends on the seller's data warehouse, dimensional model, and refresh cycle. Newco rebuilds the top 20 reports first, the next 50 over the following quarter, and the long tail over the year. A minimum viable reporting set is what the operating partner needs for the monthly business review.

External reporting depends on entity status. A private Newco owned by PE typically has lender reporting, board reporting, and tax authority reporting. Each has its own format and cadence. A previously public divested entity may have additional regulatory reporting that the buyer is now responsible for, often with a 90 day grace period from the seller.

Management reporting tools standardise faster than financial reporting tools. Operating partners typically want their familiar dashboard in place within 60 days of close, even if the underlying data is still flowing from the seller's stack. Detailed milestone setting is covered in TSA exit milestones, explained.

Tax separation is its own workstream.

Tax separation is often understaffed in TSA exits because the seller carries the tax provision as a small line in the service catalog. The work is anything but small. Provision recalculation under the Newco's structure, transfer pricing rebuild for new intercompany arrangements, indirect tax registration in every operating country, withholding tax review on cross-border flows.

Direct tax provision migration takes a full quarterly cycle to validate. The first quarter on Newco systems is recalculated and reconciled against the seller's prior provision approach. Variances are investigated and reasoned. Without the reconciliation, the year end tax provision carries audit risk.

Indirect tax, VAT, GST, and sales tax in particular, requires new registrations in every jurisdiction. The lead time on a new registration ranges from 30 days in some US states to 120 days in some European jurisdictions. The buyer should map every indirect tax registration the Newco will need on day one of close and start the registration work in the pre-signing window.

Transfer pricing for the Newco's new intercompany arrangements should be set in writing within the first 90 days. Most buyers default to the seller's prior transfer pricing methodology for the first year, then formalise a Newco methodology in year two. The cost is acceptable. The alternative, leaving transfer pricing unset, creates audit risk in every country with intercompany transactions.

Cost ranges and where overruns hide.

Finance and accounting TSA fees typically range from $30K to $150K per month for a mid-market carve-out. The variance is driven by the entity count, the geography, and the depth of the close cycle support. A two entity domestic carve-out at the low end. A multi entity, multi country carve-out with full tax and treasury support at the high end. Workstream by workstream ranges are covered in TSA exit cost benchmarks.

Cost overruns concentrate in three places. Tax provision support, where the seller's price assumes a steady state Newco that does not exist for the first six months. Audit support, which is often a separate line item billed at the seller's hourly rate. Statutory filing support, which scales with entity count and is often under estimated in the original TSA.

The standup cost on the Newco side is usually larger than the TSA cost. A new finance team, new external auditor relationships, new advisory fees for tax, treasury, and statutory filings. The Newco standup budget for finance is typically two to three times the TSA fee budget for the same period.

Finance separation is rarely the workstream that breaks the exit date. It is often the workstream that surprises the budget. Building the standup budget independently from the TSA cost, with explicit ranges for each subdomain, is the discipline that keeps the exit on plan financially as well as operationally.

More on TSA exit strategy.