Cash has to move from minute one.

Why banking is the hard deadline.

Banking is the workstream most prone to slipping past Day One because the bank's KYC and account opening process runs on its own clock. A new legal entity needs board resolutions, beneficial ownership disclosures, signatory authentication, and a documented use case before the bank approves the account. The total elapsed time from first conversation to first usable account runs 60 to 120 days at a typical commercial bank. The clock starts as soon as the legal entity exists, which often means the work cannot start until the deal is well advanced.

If banking slips past Day One, Newco runs through the seller's banking infrastructure under the TSA. The seller collects Newco's receivables into a seller account, holds the cash, and remits to Newco on a defined schedule. The arrangement works but creates real exposure. Funds may be commingled, the remittance may lag, the cost includes a markup, and the audit trail becomes hard to defend.

The disciplined buyer puts banking on the critical path from signing forward. The bank selection happens early. The KYC pack is built in parallel with the legal entity setup. The first operating account is open and funded before Day One. The pattern overlaps with the broader Day One treasury and cash management work.

The account structure.

A clean Day One account structure typically includes an operating account for general inflows and outflows, a payroll funding account drawn down by the payroll provider, AR collection accounts for customer remittances, AP disbursement accounts for vendor payments, and a sweep or concentration account that consolidates balances daily. Multinational carve-outs add accounts in each operating currency and may add country specific accounts for local payroll and tax remittances.

Each account has a defined purpose, a defined set of authorized signers, and a defined link to a downstream system. The payroll account links to the payroll provider's funding workflow. The AR accounts link to the lockbox or remittance processing workflow. The AP account links to the ERP payment run. The disciplined buyer documents the structure in a single page diagram before the bank conversation begins.

The structure also has to support the financing arrangement. A revolver or asset based lending facility usually requires the operating account to sit at a specified bank, with cash dominion provisions that give the lender visibility on balances. The disciplined buyer aligns the bank choice with the lender's requirements at signing. The pattern overlaps with the deeper Day One finance readiness picture.

Bank selection and onboarding.

Bank selection balances three factors. The bank's relationship with the sponsor and the lender, the bank's geographic and product fit with Newco's operating footprint, and the bank's capacity to onboard a new legal entity on the required timeline. A bank that wins on relationship but takes 120 days to open an account is the wrong choice for a deal closing in 90 days.

The disciplined buyer runs a structured RFP with three or four banks. The RFP covers account types, payment products, treasury management platforms, FX capability, fee schedules, and onboarding commitments. The onboarding commitment includes a named relationship manager, a documented timeline with named milestones, and a credit decision on any required overdraft or short term facility.

The KYC pack assembly is then the critical path. Articles of incorporation, board resolutions, ultimate beneficial ownership disclosures, signatory identifications, sanctions screening, anti money laundering attestations, and proof of address all sit in the pack. Carve-outs often run into KYC delays because the legal entity formation is recent and the documentation history is thin. The bank may require additional comfort. The pattern overlaps with the broader Day One legal entity setup work.

Payroll funding on Day One.

The payroll account is the most time critical of the Day One accounts. Newco employees are paid on the next regular payroll cycle after Day One. The payroll account must be open, funded, and linked to the payroll provider's debit instruction by that date. A miss on the first payroll is the kind of incident that destroys employee trust and triggers regulatory attention.

The funding mechanics need testing in advance. The payroll provider sends a debit instruction one to three banking days before pay date. The instruction has to clear without rejection. A test debit for a small amount, run two pay cycles before Day One, surfaces problems early. The test confirms account configuration, signing authority, and the bank's ACH or wire processing.

Backup plans matter for the first cycle. A wire backup for the funding amount, a bank contact for same day intervention, and a manual payroll run plan in case the system fails. The backup plans are documented and rehearsed. Specialist support on this work is part of the Day One Readiness Program when the buyer needs the full Day One coverage.

AR redirection and customer notice.

Customer cash receipts are the second time critical workstream. On Day One, every customer that owes Newco needs to be redirected to pay into the new Newco account. The redirection requires a customer notice, an updated remit to address on invoices, and an updated bank wire instruction in the customer master file at each payor. The full redirection takes 60 to 120 days because customer payment systems run on cycles.

The TSA usually covers the transition. The seller's lockbox continues to receive payments to the old remit address for an agreed window. The seller deposits the cash, identifies the receipts as belonging to Newco, and remits to Newco on a defined schedule. The TSA fee covers the seller's processing cost plus a markup. The fee is acceptable for a defined window with a hard exit date.

The customer notice is the artifact that drives the transition. A clear letter to each customer, signed by Newco's CFO or Treasurer, with the new remit address and bank instructions, mailed at the appropriate moment. The notice is followed up by an AR team contact for the largest customers to confirm the change is processed. The pattern overlaps with the broader Day One customer and vendor communication work.

Treasury platform and controls.

The treasury management platform sits on top of the bank accounts. The platform provides balance reporting, payment initiation, FX execution, and the audit trail. A new Newco needs at minimum a working portal at each bank with multi user access, dual approval on payments, and integration to the ERP for cash application and reconciliation.

The control framework matters from Day One. Payment limits and approval thresholds are set in the bank portal. The Treasurer approves the framework, the controller monitors compliance, and the internal auditor tests adherence in the first quarter. Without the controls, Newco is exposed to fraud, error, and audit findings that compound through the first year.

A more sophisticated treasury management system can be added later but is rarely Day One critical. The bank portal plus the ERP module covers the core need. Specialist support on the entire Day One banking and treasury workstream is part of the Day One Readiness Program when the buyer needs the discipline applied at scale.

More on Day One readiness.