Ask the managing directors of a Mittelstand company — Germany's mid-sized, largely owner-run businesses — when last month's figures are reliable enough to act on, and the answer is rarely "the second working day". Most of the time it lands somewhere around the tenth. That is not a sign of carelessness, and it is not a question of effort. It is the result of a division of labour that grew up over decades in Germany, and whose individual steps each make sense on their own.
Reliable surveys of how long the monthly close (Monatsabschluss) actually takes in the German Mittelstand are scarce — which is why we deliberately quote no percentage here. Two ten-day marks, by contrast, are very concrete: the GoBD (the German principles for the proper keeping of books in electronic form) treat the recording of non-cash transactions "within ten days" as unobjectionable, and § 18 (1) UStG requires the Umsatzsteuer-Voranmeldung, the preliminary VAT return, to be transmitted "by the tenth day after the end of each filing period". So the tenth day is no accident. The process is built around it.
This article breaks the duration of the monthly close down into its components: four mechanisms that stretch it out, and three levers that genuinely shorten it. doo.FINANCE supports Mittelstand companies in Germany on exactly this question — not with the advice to work faster, but with a process design in which there is less waiting.
What the monthly close in the Mittelstand actually covers
The monthly close is not a single operation but a chain. It begins with transactions recorded in full and ends with a statement: this is where the company stood on the last day of the month. In between lie at least five steps:
- All of the month's outgoing invoices have been issued and posted.
- All of the month's incoming invoices have arrived and been coded to the right accounts.
- Bank movements have been reconciled against receivables and payables.
- Accruals, provisions and items belonging to other periods have been posted.
- The Umsatzsteuer-Voranmeldung has been reconciled and filed.
Every step has a precondition. Bank reconciliation needs the invoices, the accruals need the bank reconciliation, the VAT return needs everything before it. A chain moves as fast as its slowest link — and in the Mittelstand the slowest link is rarely the person doing the bookkeeping. It is almost always a waiting period.
One distinction matters here: the Jahresabschluss, the statutory annual accounts, is a legal obligation, whereas the monthly close is a management instrument. It is allowed to be pragmatic. That is precisely why its duration is worth questioning — it reflects a decision about how work is organised, not a legal requirement.
Four mechanisms that stretch the monthly close to ten days
Mechanism 1: the documents go to the Steuerkanzlei — and come back posted
This is the specifically German mechanism, and it accounts for the largest part of the waiting. In many Mittelstand companies the document originates in the business, is collected, handed over to the Steuerkanzlei — the tax advisory firm — posted there, and comes back as a report. The month therefore closes to the rhythm of a round trip, not to the rhythm of the business.
The most widespread technical expression of this route is DATEV. The provider itself states the precondition unambiguously: "The use of DATEV products and DATEV services is therefore tied to cooperation with a DATEV member (e.g. a Steuerberater or a lawyer)" — in the original, "Deshalb ist die Nutzung von DATEV-Produkten und DATEV-Dienstleistungen an die Zusammenarbeit mit einem DATEV-Mitglied (z. B. Steuerberater oder Rechtsanwalt) gebunden." The documents are uploaded and, according to the provider, held in the DATEV data centre "centrally available to the company and the tax firm" — but the posting happens where the tax firm works.
There is nothing wrong with this, and it is no reproach to the Steuerkanzlei: it works through its clients in the order in which their papers arrive, and it meets its own deadlines while doing so. The consequence for duration is measurable all the same. Between "document available" and "document posted" sits a handover point, and a handover point costs calendar days, not working hours. Anyone who wants to shorten the ten days should therefore first know how many of them are pure waiting at this point. Hardly any company knows that number — it appears in no report.
Mechanism 2: incoming invoices arrive later than the month ends
The month ends on the 31st; the supplier's invoice arrives on the 4th. That is the normal case, not the exception. A close that waits for every incoming invoice to be complete is therefore waiting on third parties whose billing runs nobody in your own house controls.
The E-Rechnungspflicht, Germany's electronic invoicing obligation, initially changes the format rather than the timing: since 1 January 2025, according to the Bundesministerium der Finanzen, the federal finance ministry, domestic companies face "the necessity of being able to receive an e-invoice". For issuing them, staggered transitional rules apply until the end of 2026, or — where prior-year turnover was up to €800,000 — until the end of 2027. Earlier receipt becomes possible as a result, but it does not arrange itself.
The practical lever therefore lies not in the format but in a decision: do you close the month on the basis of the invoices received by a defined cut-off date and accrue the remainder deliberately, or do you wait for completeness? The second option is more accurate. The first one can be managed.
Mechanism 3: bank reconciliation is done by hand
Matching the bank statement against the open-item list is still a line-by-line activity in many companies: find the payment, assign the invoice, clear the difference, allocate the early-payment discount, split the batch transfer. At a few hundred movements a month that is a full working day; at several thousand, considerably more.
This work is also tied to the end of the month if it happens only once a month. It therefore falls in exactly the week in which everything else is due at once — and it is a precondition for the steps that follow. A bottleneck that reinforces itself.
Mechanism 4: accruals only surface right at the end
Provisions, expenses belonging to another period, services delivered but not yet invoiced, holiday-pay provisions: these items do not arise in day-to-day operations, they are discovered at the close. If you only start looking for them once the books have already been reconciled, you reopen the reconciliation a second time.
Here too the cause lies not in diligence but in sequence. Accruals that follow a recurring checklist and run alongside the month cost minutes. Accruals reconstructed from memory cost days — and generate queries.
The tenth day is already in the calendar
It is worth reading the regulatory framework closely, because it explains the duration you observe.
Recording: under the GoBD, "recording non-cash transactions within ten days … is unobjectionable"; cash receipts and cash payments must be recorded daily under § 146 (1) sentence 2 AO, the German Fiscal Code. For the subsequent posting, period-by-period recording up to the end of the following month is not open to objection, provided the organisation ensures that no documents are lost in the meantime.
Filing: § 18 (1) UStG requires the preliminary return to be transmitted "by the tenth day after the end of each filing period". Under § 18 (2) UStG the filing period is the calendar quarter; where the tax for the preceding calendar year came to more than €9,000, it is the calendar month.
From this follows an uncomfortable but useful conclusion: a close on the tenth day is not late. It is on time. The process fulfils its purpose — it simply fails to fulfil the second one. For managing a business, figures that are ten days old when they arrive, and that need further days before anyone has commented on them, are a retrospective. Not a basis for decisions.
What actually shortens the duration
Three levers act on the mechanisms rather than on how fast the people involved work.
Recording as you go, instead of at month-end
If incoming invoices are captured digitally, checked and approved on arrival, the greater part of the month is already posted by the last day of the month. The close then consists of what is left, not of the whole. That is exactly what the GoBD expressly permit — the ten-day mark is an upper limit, not an instruction to wait that long.
The practical test is a short one: how many of last month's documents are still unrecorded on the final day of the month? If the answer is more than a quarter, the close is being produced in a week in which it would not have to be produced.
Automated bank reconciliation instead of line by line
A daily bank import with rule-based matching proposals moves the work out of month-end and into everyday operations, reducing it to the exceptions. What matters is less the hit rate of the automation than the timing: what runs daily does not pile up.
One set of data instead of two
The most effective lever is also the most uncomfortable. Where invoicing, banking and bookkeeping sit in one system, the handover point from Mechanism 1 disappears — the entry is created where the transaction is created, and the report is available the same day. Where two sets of data are maintained, every close raises the question of which of the two is currently right.
For companies examining this route, we have described it in detail: From DATEV to Odoo — the complete migration guide for the Mittelstand. That article covers data migration, the chart of accounts and the timetable; here the organisational core is enough: one set of data shortens the close not because the software calculates faster, but because a waiting point disappears.
What this means for working with your Steuerkanzlei
The question is not "with or without a tax firm". It is this: at which point in the chain does the ongoing bookkeeping happen?
The division of tasks is set out in law. Under § 6 nos. 3 and 4 StBerG, the German Tax Advisory Act, carrying out mechanical operations in the keeping of books, posting current transactions and running payroll are exempt from the prohibition on unauthorised assistance in tax matters — subject to the conditions stated there. Setting up the bookkeeping is not among these exemptions. Advice, tax returns and the closing of the accounts remain a matter for the Steuerberater, the certified tax adviser.
In practice this means that a Mittelstand company can bring day-to-day recording in-house and deploy the Steuerkanzlei precisely where its reserved activities lie — with both sides looking at the same set of data. That does not shorten the tax firm's work. It shortens the waiting that precedes it. Which split works in an individual case belongs in a conversation with your tax adviser; this article does not replace tax advice.
How doo.FINANCE shortens your monthly close
We start not with speed but with the waiting points. As a first step we measure how many calendar days of your close go to recording, handover, bank reconciliation and accruals — and how many of those are pure idle time. On that basis we set up your accounting in Odoo so that recording and bank reconciliation run alongside day-to-day operations, and together with you and your Steuerkanzlei we define a closing calendar that fits your company's need for management information. As an Odoo Gold Partner with our own finance team, we support both: the Odoo accounting services and the ongoing reporting that follows.
In a first conversation we establish which of the four mechanisms costs you the most days.
Contact us for a free call →Frequently asked questions about the monthly close
How fast can a monthly close in the Mittelstand realistically be?
Reliable benchmarks for the German Mittelstand are not publicly available, so we quote no second-hand target figure. This calculation is realistic, though: subtract the pure idle time from your current duration — days on which nobody is working on the close, but everyone is waiting for documents, handovers or returned work. What remains is the actual processing time. In most companies it is considerably shorter than the calendar duration.
Does a faster close breach the GoBD?
No — the opposite. The GoBD treat the recording of non-cash transactions within ten days as unobjectionable and require daily recording of cash movements under § 146 (1) sentence 2 AO. Earlier, continuous recording stays within that framework. What the GoBD require is traceability and immutability, not a late date.
Does the E-Rechnungspflicht change how long the monthly close takes?
Not directly. Since 1 January 2025 domestic companies must be able to receive e-invoices; for issuing them, staggered transitional rules run until the end of 2026, or the end of 2027 for companies with prior-year turnover of up to €800,000. Structured invoice data makes automated capture considerably easier — but the moment at which a supplier issues its invoice is unaffected.
Do we need to change systems for this?
Not necessarily. The first two levers — continuous recording and daily bank reconciliation — can be implemented in many existing environments and take effect immediately. The third lever, a shared set of data, normally presupposes a decision about systems. The sensible order is this: first measure where the days go, then decide whether a change actually resolves the remaining waiting points.
Who should set the closing calendar?
The management, together with bookkeeping and the Steuerkanzlei. The monthly close is not a set of accounts required by commercial law but an internal management instrument — its cut-off date is therefore a management decision. It should be aligned with the moment at which you need the figures for decisions, not with the moment at which they happen to be ready.