Most German companies know they have twelve months to file their annual accounts. Far fewer know that the deadline to prepare them is a completely different — and much shorter — clock.
For medium-sized and large corporations, the statements must be prepared within three months of the financial year end. Small corporations get six. Twelve months is the rule for sole traders and partnerships — which is exactly why so many finance teams have the wrong number in their heads: they've heard "twelve months" somewhere, and it doesn't apply to them.
It's early September. If your financial year ends on 31 December and you're a medium-sized corporation, your preparation deadline is 31 March — and the work that determines whether you hit it comfortably is happening right now, or not at all.
In short: two separate deadlines govern German annual accounts, and they get confused constantly. Preparation: three months after year end for medium and large corporations, six months for small ones, twelve for sole traders and partnerships. Filing: twelve months for everyone. The preparation clock is the binding one, and most of what makes it achievable — clean reconciliation, documented accruals, a planned inventory count — has to happen before 31 December, not after. Starting in December means compressing three months of process work into the busiest weeks of the year. Starting in September means the year-end close is a routine exercise.
Two deadlines, not one: preparation vs filing
This distinction causes more year-end stress than any other single misunderstanding.
The preparation deadline governs when the annual financial statements must actually exist — completed, signed off internally, ready. The filing deadline governs when they must be publicly disclosed, and that one is twelve months for everyone (covered in detail in our guide to disclosure deadlines and penalties).
Companies that only track the filing date assume they have a full year. They don't. The preparation deadline lands months earlier, and it's the one that determines when the finance team's actual work has to be finished.
Twelve months is when the statements become public. Three months is when they have to exist. Only one of those is your problem in Q1.
The preparation deadline by company size — what applies to German companies
| Legal form / size | Preparation deadline | For a 31 December year end |
|---|---|---|
| Medium and large corporations | 3 months after year end | 31 March |
| Small corporations | 6 months after year end | 30 June |
| Sole traders and partnerships | Up to 12 months after year end | 31 December (following year) |
| Size classification follows the same thresholds that govern disclosure scope — worth confirming with your tax advisor, since the thresholds were raised in April 2024 and many companies moved down a class. | ||
The practical point for most readers: if you run a GmbH that isn't small by the statutory definition, three months is your reality. That is not a lot of time to chase missing documents, resolve disputed intercompany balances and make judgement calls on provisions — which is why the preparation has to start while the year is still running.
Why starting the year-end close in September is already late
The standard advice in the profession is blunt: don't start in September. Not because September is too early, but because by September a well-run finance function should already be maintaining year-end readiness rather than beginning it.
The reason is simple arithmetic. Several of the tasks that determine year-end quality can only be done before 31 December — you cannot count inventory retroactively, you cannot go back and get a supplier confirmation for a balance you didn't ask about, and you cannot un-book a year of sloppy classifications in January. The work that can be done in Q1 is assembly. The work that has to be done now is everything that makes assembly possible.
What September is genuinely good for: finding out what's broken while there's still a quarter left to fix it.
What "prepared" actually means: the four foundations
Strip away the terminology and year-end preparation rests on four things being true:
- Every transaction of the year is recorded. No shoebox of receipts, no unposted supplier invoices sitting in someone's inbox, no expense claims from March still waiting.
- Every balance is reconciled and explainable. Bank, cash, receivables, payables, intercompany — each agrees to an external source or has a documented reason why it doesn't.
- Period-end judgements are made and documented. Accruals, provisions, depreciation, prepayments — the entries that assign income and expense to the year they economically belong to.
- Assets are verified, not assumed. Inventory counted, fixed asset register matched to what physically exists.
None of this is exotic. All of it is difficult to do in six weeks while also running January's operations.
Reconciliation: the work that can't be compressed
Reconciliation is where year-end preparation succeeds or fails, and it's the least compressible part of the process. Bank and cash accounts, receivables and payables ledgers, and — for anyone inside a group — intercompany balances all need to agree with an external counterpart.
Intercompany is the reliable problem child: the German entity's books and the counterparty's books disagree, nobody notices during the year, and the gap surfaces at year end when the other side is equally busy. Reconciling these monthly rather than annually is the single highest-leverage change most subsidiaries can make — and it's the same discipline that transfer pricing documentation depends on, so the work pays for itself twice.
Open items deserve the same treatment now rather than in March: receivables that will never be collected need a decision, and payables that were settled but never cleared need to come off the ledger.
Not sure whether your balances would survive a dry-run reconciliation?
That's exactly what a free 20-minute assessment call is for — we go through where your year-end actually stands, and you leave knowing what needs fixing before December. No preparation needed on your side.
Accruals, provisions and depreciation: the judgement calls
The entries that assign income and expense to the correct year are where year-end stops being bookkeeping and starts being judgement: accruals for costs incurred but not yet invoiced, provisions for obligations that are uncertain in timing or amount, depreciation reflecting the year's wear on fixed assets, and prepayments for amounts paid in one year that belong to the next.
Two practical rules make these manageable. First, standardise the recurring ones — rent, insurance, licences, audit fees — so they roll forward from a documented schedule instead of being re-estimated from scratch each year, exactly as in a well-run monthly close. Second, document the reasoning at the time you make the judgement, not months later when someone asks. Whether a particular provision is required and how it should be measured is a question for your tax advisor; making sure the underlying facts and calculations are available and documented is the finance function's job.
The inventory count: the one task with a hard date
The inventory count is the only part of year-end preparation that genuinely cannot be postponed, because it captures a physical reality at a moment in time. It produces the detailed record of assets and liabilities by type, quantity and value that the statements are built on.
What makes counts go wrong is never the counting — it's the planning. Who counts what, when, with which cut-off rules for goods in transit, and how discrepancies get investigated rather than just adjusted. That plan is a September or October task. A count planned in the third week of December is a count that will produce numbers nobody fully trusts.
The September-to-December timeline
| Period | Focus |
|---|---|
| September | Diagnose: run a dry-run reconciliation of all balance sheet accounts. Whatever doesn't reconcile now is your Q1 crisis — find it while there's time. |
| October | Clean up: resolve open items, chase missing documentation, agree intercompany balances with counterparties while everyone still has capacity. |
| November | Plan and standardise: finalise the inventory count plan, document the recurring accrual schedule, agree the year-end timetable and hand-off with your tax advisor. |
| December | Execute: count inventory, enforce a clean cut-off, post what can be posted before the year closes. |
| January–March | Assemble: post period-end entries, produce the statements, hand over a complete package. Assembly — not investigation. |
The test of whether this worked is simple: in January, is the finance team producing the statements or still finding the inputs?
What your tax advisor needs from you — and when
The division of labour is the same one that governs disclosure and documentation generally: your tax advisor prepares and files the statutory statements and answers the technical and legal questions — size classification, measurement questions, tax treatment. Your finance function delivers the raw material: complete records, reconciled balances, documented judgements, a verified inventory.
The timing matters as much as the content. An advisor who receives a clean package in January can work through it methodically. An advisor who receives an incomplete package in March is doing forensic work against a deadline, and every question they send back costs days you no longer have. One conversation in November about what they need and when is worth more than any amount of goodwill in March.
Where an interim controller fits in
Year-end preparation is a scoped project with a fixed deadline and a clear finish line — the classic shape of an interim controller mandate. The work is the diagnosis and the fixing: running the September dry-run to find what doesn't reconcile, clearing the backlog of open items, getting intercompany agreed, building the accrual schedule, planning the count, and setting up the hand-off so the advisor gets a complete package rather than a puzzle.
Done as a project starting now, it's a few weeks spread across a quarter. Done in January, it's the same work compressed into the weeks when the team is also closing December, producing January reporting, and answering the advisor's questions. Same work, twice the stress, worse numbers.
Will your January be assembly — or archaeology?
There's still a full quarter left to make it the first one. In a free 20-minute assessment call we look at where your year-end preparation actually stands and what has to happen before 31 December. Or get in touch directly.
Conclusion
The three-month preparation deadline is the one that binds, and it's the one most companies discover late because they're tracking the twelve-month filing date instead. The gap between a calm year-end and a chaotic one isn't effort in Q1 — it's preparation in Q4.
Reconcile now while there's time to investigate. Plan the count while the plan can still change. Document the judgements while the facts are fresh. Then January becomes assembly instead of archaeology.
This article shares general information from a controlling and process perspective. It is not tax or legal advice — for your company's specific deadlines, size classification and measurement questions, please speak to your tax advisor.
Frequently asked questions (FAQ)
What is the deadline to prepare annual financial statements in Germany?
Three months after the financial year end for medium-sized and large corporations, six months for small corporations, and up to twelve months for sole traders and partnerships. This is separate from — and much earlier than — the twelve-month deadline for public disclosure.
What is the difference between the preparation deadline and the filing deadline?
The preparation deadline governs when the statements must exist and be complete. The filing deadline governs when they must be publicly disclosed, and is twelve months for everyone. Companies that only track the filing date routinely assume they have far more time than they do.
When should year-end close preparation start?
Ideally the finance function maintains year-end readiness all year. Practically, September to October is the last comfortable window: several tasks — the inventory count, cut-off discipline, agreeing balances with counterparties — can only be done before 31 December, not retroactively in Q1.
What has to be done before 31 December?
The inventory count, a clean cut-off between periods, resolving open items and agreeing intercompany balances with counterparties, and recording all transactions of the year. Work that can wait until Q1 is assembly: posting period-end entries and producing the statements.
What does the tax advisor need from the finance team?
Complete records with no unposted documents, reconciled balances that agree to external sources, documented period-end judgements with their reasoning, and a verified inventory and fixed asset register. Delivered in January rather than March, so the work is methodical rather than forensic.
About the author
Mert Ilter is an interim financial controller based in Hamburg, Germany. He works with small and mid-sized German companies, startups, and German subsidiaries of international groups — building and repairing finance functions, accelerating month-end and year-end close, and preparing companies for funding rounds, due diligence and audits. He works solo: no agency, no layer in between, onboarding within days.
Areas of focus: interim controlling · finance function build-up for German entities · HGB and IFRS reporting · DATEV · month-end and year-end close · investor-grade reporting · AI-enabled finance processes.
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