Monthly bookkeeping: routine and management alerts

Quick answer. Monthly bookkeeping means closing each month in six steps (collect, record, reconcile the bank, produce the trial balance, analyse variances, report) so you have reliable figures by the 10th of the following month. The goal is not compliance alone: it is to spot a cash or margin drift within days, rather than at the annual close, twelve months too late.

Many directors discover their result once a year, when the financial statements are filed. Yet a financial year is won or lost month by month. An eroding margin, a swelling receivables balance, an under-provisioned VAT liability: these signals appear in the accounts well before they become a cash problem. Monthly bookkeeping turns accounting, often seen as a chore, into a steering tool. What it takes is a clear routine and well-calibrated alerts, without burying the director under figures.

Annual accounting meets a legal obligation. Article L123-12 of the French Commercial Code requires that movements affecting the company's assets be recorded chronologically, and that the existence and value of assets and liabilities be verified by inventory at least once every twelve months. That is the minimum. Monthly monitoring is not imposed by law: it is a management discipline.

The difference is one of nature, not degree. Accounts kept once a year document the past. Accounts kept every month inform upcoming decisions: hiring, investing, chasing a customer, postponing a purchase. In the files we take over, the most painful losses almost never come from a single error, but from a slow drift no one saw, because no one looked at the figures between two year-ends.

Monthly monitoring is also a legal safety net. Up-to-date accounts let you measure, in real time, available assets against due liabilities, and therefore detect insolvency (cessation des paiements). Article L631-4 of the Commercial Code requires the director to declare it within 45 days. Without monthly monitoring, that deadline runs unnoticed.

Effective monitoring relies on a stable sequence, repeated on a fixed date. Here is the routine we deploy for our clients:

1. Collect the month's transactions. Centralise purchase invoices, sales invoices, bank statements, expense reports and payroll items. Setting an internal cut-off date, for example the 5th of the following month, prevents missing documents.
2. Record and match. Post each movement to the correct chart-of-accounts code, then match customer and supplier accounts to isolate what genuinely remains open.
3. Reconcile the bank. Match the accounting balance against the bank statement. Every gap is explained before locking the month. This is the control that secures cash and surfaces a duplicate payment or an abnormal direct debit.
4. Produce the trial balance. Generate the trial balance, the general ledger and a monthly income statement, then compute margin, operating surplus (EBE) and net result.
5. Analyse variances. Compare actuals against budget and the prior month, and trigger management alerts.
6. Report to the director. Produce a one-page dashboard with three to five indicators and a comment.

The first two steps are accounting production; the next four create the steering value. An organisation that stops at data entry has accounting, not monitoring.

A monthly dashboard is not meant to display everything. It must answer three questions: am I profitable, do I have enough cash, are my customers paying on time. The rest is detail.

An alert only makes sense when tied to an action. A falling margin calls for a pricing or purchasing review; a deteriorating DSO calls for a collection process. To turn these thresholds into shared visuals, we often rely on Power BI dashboards connected to the accounting system, removing the error-prone Excel re-keying.

The choice between keeping monitoring in-house or outsourcing it depends on size, tooling and the director's available time. Here is how we frame it.

A frequent trade-off is to keep routine data entry in-house and outsource the monthly review, bank reconciliation and analysis. That is the spirit of our outsourced finance director service: you keep control of operations while we secure the figures and the steering. For accounting production itself, our bookkeeping and review engagement handles the full cycle.

Micro-enterprise. A micro-entrepreneur has no accrual accounting, only a receipts ledger. Simplified monthly monitoring still helps anticipate threshold breaches: the 2026 VAT exemption stands at 37,500 euros for services and 85,000 euros for trading activities, beyond which VAT becomes chargeable.

Startup raising funds. Investors expect fast, reliable monthly reporting, sometimes within five business days. Monthly monitoring becomes a credibility asset as much as an internal tool. Our tech startups often make it a prerequisite before a board meeting.

Company under the standard VAT regime. The CA3 return is monthly and must be filed in the month following the period. Without disciplined monthly monitoring, the risk of a missed filing or a VAT base error is mechanical.

Bank reconciliation is the first to be dropped. When time is short, it is the sacrificed step. Yet it is the only one that guarantees the figures match reality. Unreconciled accounts give an illusion of control. Our detailed method is set out in this article on error-free bank reconciliation.

The tax provision is underestimated. Many directors think in terms of available cash without deducting collected VAT, social charges and upcoming corporate income tax. A reminder: corporate income tax instalments fall on 15 March, 15 June, 15 September and 15 December. Cash that looks comfortable may already be committed.

Compliance of the accounting file. In the event of an audit, Article L47 A of the French Tax Procedures Code requires the submission of a standardised accounting entries file (FEC). Well-kept monthly accounting produces this file effortlessly; accounting rushed at the last minute produces it badly.

Recently, the director of a services company approached us after discovering, at year-end, a result far below his estimates. Rebuilding his accounts month by month made the cause obvious: a margin eroded from the fourth month of the year by poorly re-invoiced subcontracted purchases. No one had looked at the figures between two closings. Simple monthly monitoring would have revealed the drift in the first quarter, in time to renegotiate or pass on the extra cost.

Our reading is consistent: monthly bookkeeping is worth not its volume but its regularity and interpretation. A one-page dashboard read every month beats a forty-page report consulted once a year. The value of a chartered accountant here is not to produce statements: it is to tell the director what those statements mean and which decision they call for. Registered with the Order of Chartered Accountants and authorised as statutory auditors, we apply this critical reading to every file. It is also what distinguishes living monitoring from monthly reporting that merely archives the past.

The underestimated risk is inertia: monitoring set up and then abandoned after three months for lack of routine. A modest system kept all year beats an ambitious one that is dropped. That is why we first calibrate frequency and scope to the director's real capacity to use it.

Hayot Expertise tip. Start small and steady. Pick a fixed internal cut-off date, three indicators at most, and a 30-minute monthly meeting to discuss them. You can enrich the system later. Imperfect but consistent monitoring will always beat perfect monitoring that is never launched, and it is that consistency that ends up changing your decisions.