- Your bookkeeper can’t audit your books, beyond limits. HKICPA R601.5 bars accounting work for a non-public-interest audit client unless it’s routine or mechanical and the firm addresses the self-review threat.
- The HK$2 million filing shortcut is gone. Any gross income in the basis period means the return goes in with financial statements and a tax computation.
- Audited accounts go with the return, with three exceptions: dormant companies, companies incorporated where no audit is required and no auditor’s report exists, and Hong Kong branches of foreign companies.
- Represented 2025/26 due dates: code N no extension, code D 17 August 2026, code M 16 November 2026. Code M loss cases can reach 1 February 2027 if applied for by 2 November 2026.
- Splitting the work is legal and often sensible. The cost shows in elapsed days at year end, not in either firm’s fee quote.
- Allowed: you can keep bookkeeping with one firm and the statutory audit with another
- Same firm: possible for a private Hong Kong company only if the accounting work is routine or mechanical and the firm addresses the resulting threat
- The constraint: audited accounts must accompany the profits tax return, so both share one deadline
- The real cost: every handoff between two firms comes out of your filing runway, not theirs
Can my accountant audit my company in Hong Kong, or do I need a second firm? Most Hong Kong SMEs never actually decide. A bookkeeper came first, an auditor was added when the first profits tax return landed, and nobody revisited it.
The split is allowed, and often it’s the right setup. What changed is the timetable. The Inland Revenue Department has withdrawn the concession that let businesses with gross income under HK$2 million file without supporting documents, so your audited accounts and your return now travel on one deadline.
In this guide, you’ll learn:
- Whether your company needs audited accounts, and the three exceptions
- What the withdrawn HK$2 million concession changed about your year end
- What independence rules permit when one firm does both jobs
- How each handoff eats into the block extension dates
- When keeping your auditor and bookkeeper apart is right
Can small companies still file without audited accounts?
No. That concession has been withdrawn. The IRD’s filing reminder states that small corporations and businesses with gross income not exceeding HK$2 million will no longer be permitted to file their profits tax returns without supporting documents.
Audited financial statements are now required in every case but three:
- Dormant companies within the terms of the Companies Ordinance (Cap. 622)
- Companies incorporated where the law requires no audit and no auditor’s report exists
- Hong Kong branches of foreign companies that supply specified information instead
What goes in with the return
If your corporation had gross income in the basis period, the IRD’s completion rules require:
- A certified copy of the statement of financial position
- A certified copy of the statement of comprehensive income
- An auditor’s report, where required
- A tax computation with supporting schedules
Supplementary forms go in electronically through the Business Tax Portal or the Tax Representative Portal. Our guide to filing your profits tax return walks through the steps.
What this changes in practice
A small company used to file first and sort the accounts out afterwards. Now the audit has to finish before the return goes in, which puts both on one critical path with one date at the end.
One distinction worth keeping straight: a statutory audit is not an IRD tax audit. The second is an investigation into a return you’ve already filed.
If you’re hoping to skip the audit, the test is narrower than most founders expect. Our guide to whether your company can skip a full audit sets it out, and what audited financial statements involve covers who may sign them.
One provider or two: what actually differs?
The choice gets framed as a cost comparison. It isn’t. Five things differ, and only one shows up on an invoice.
| Two providers Bookkeeper plus external auditor |
One provider | |
|---|---|---|
| Who prepares the audit schedules | Often unassigned until year end | Assigned by default |
| Deadlines you track yourself | Two sets, plus the handoff between them | One |
| When the auditor raises a query | Routed to a third party, and you relay it | Resolved internally |
| Total cost | Two engagements, and the coordination time is yours | One engagement, coordination included |
| Accountability if the filing is late | Split, and each side can point at the other | Sits with one firm |
The schedules gap does the most damage. Bookkeeping engagements stop at the ledger. Audit engagements start by asking for the schedules built on top of it: fixed asset registers, accruals, and reconciliations tying the ledger to the statements. If neither contract names an owner for that gap, the work lands on your finance lead in the week the auditor asks.
Can the firm that keeps your books also sign your audit?
Sometimes, inside a defined boundary. The HKICPA Code of Ethics treats bookkeeping for an audit client as a self-review threat: the firm may end up auditing its own work.
A private Hong Kong company isn’t a public interest entity, so paragraph R601.5 sets the test. A firm shall not provide accounting and bookkeeping services to that audit client, including preparing the financial statements on which it will express an opinion, unless the services are routine or mechanical and the firm addresses any threats that are not at an acceptable level.
What “routine or mechanical” actually means
Paragraph 601.5 A1 defines it as work where the client has already made the necessary judgements:
- Posting transactions the client has coded
- Posting client-approved entries to the trial balance
- Preparing statements from a client-approved trial balance
Once the firm starts making the accounting judgements, it has crossed the line. It cannot assume a management responsibility either.
So the answer isn’t “one firm, obviously”. One firm can do both on two conditions: your books are clean enough that the accounting work stays mechanical, and the firm can show you how the teams are separated.
If a firm offers to do both, ask which safeguard it applies. The Code names two: using professionals who are not on the audit team to do the accounting work, and having an independent reviewer who was not involved in the service review the audit. Get that answer in the engagement letter, not the sales call. Where the threat cannot be brought to an acceptable level, the firm must decline the work.
How much runway does your filing deadline actually give you?
Less than the calendar suggests, because the audit has to finish first. For represented taxpayers in 2025/26, the IRD’s block extension letter sets extended due dates by accounting date code:
| Code | Year end | Extended due date |
|---|---|---|
| N | 1 April to 30 November 2025 | No extension |
| D | 1 to 31 December 2025 | 17 August 2026 |
| M | 1 January to 31 March 2026 | 16 November 2026 |
Code M clients with allowable losses can apply for a further extension to 1 February 2027, with the list due no later than 2 November 2026.
Work backwards from your date
Take a 31 March year end, so 16 November. The chain runs:
- The return needs a tax computation
- The computation needs signed accounts
- The accounts need the auditor’s queries cleared
- The queries need schedules from whoever holds the ledger
Inside one firm, those are internal handovers. Across two, each is an email thread with a response time you don’t control, and the last step absorbs every delay upstream. Our Hong Kong tax filing deadlines guide has the full calendar.
Voluntary e-filing through the Business Tax Portal buys a further one-month extension on application. The catch is timing: the application must reach the IRD at least seven working days before the return is otherwise due. Plan for that month in September rather than discovering it in November.
What does running two providers cost in total?
Three things, and only two of them appear on an invoice:
- The bookkeeping engagement fee
- The audit engagement fee
- Your own coordination time, which nobody prices
Buyers usually compare the first two and stop. That’s the wrong comparison, because the third is where a two-firm setup actually gets expensive.
Where the coordination hours go
An audit isn’t one request. It’s a sequence, and every step crosses the gap between the two firms:
- Scoping the gap. Agreeing who builds the audit schedules, ideally before year end rather than during it.
- Relaying the request list. The auditor asks you; you forward it to the bookkeeper; the bookkeeper asks a clarifying question; you relay that back.
- External confirmations. Under HKSA 505, the auditor obtains confirmations directly from third parties such as your banks. Those parties reply on their own timetable, not yours.
- Query rounds. Each round is a full loop through both firms instead of a conversation inside one.
- Written representations. Under HKSA 580, the auditor requests written representations from management before signing. That sign-off sits with you, and it comes last.
The bad-year cost
When the auditor proposes adjustments after the bookkeeper has closed the period, someone reposts the entries and someone rebuilds the tax computation. In a two-firm setup, that happens twice, in sequence, with a handoff in the middle. Clean years hide this cost entirely. It surfaces exactly when you have least time.
Pricing depends on transaction volume, so the only honest figures are your own quotes. Sleek’s accounting services in Hong Kong and audit fees are on the pricing page.
Can I keep accounting and auditing separate if everything else moves to one provider?
Yes. Nothing in Hong Kong law ties these services together. Incorporation, company secretarial work, and payroll can sit with one provider while your accounting and audit stay where they are.
What you give up is the single timetable. Three parties, three response times.
So the question isn’t how many firms you use. It’s who owns the date:
- You can name the person accountable for the return reaching the IRD on time. The structure is fine.
- The honest answer is “all three of them”. That’s the problem, and consolidation is only one way to fix it.
One thing makes that date harder than it looks: the same audit feeds two obligations. The Companies Ordinance requires your audited reporting documents to reach members within a set period after your accounting reference period ends. The IRD requires them with the profits tax return. One late audit misses both, and the two deadlines don’t move together.
Common mistakes when the books and the audit sit in different firms
Assuming the auditor will chase the bookkeeper
They usually won’t, and rarely with urgency. The auditor’s engagement is with you, so queries come to you and you forward them. Companies that survive a two-firm year end put one named person in the middle deliberately, rather than discovering in October that nobody was.
Treating the audit as something that follows the filing
The order runs the other way. Audited accounts form part of the submission, so the audit has to finish before the return can be filed. Booking the audit for the month the return is due leaves no room for a single query, let alone a bank confirmation that comes back late.
Leaving schedule preparation out of both engagement letters
If neither contract names who prepares the reconciliations and registers between the ledger and the audit, that work still happens. It just happens under deadline pressure, and at your cost. Settle it when you sign, not when the auditor asks.
When keeping them separate is the right call
Sleek sells the bundled model, so weigh what follows accordingly. There are real cases where two firms is the better answer.
- You have a long-standing CPA with genuine sector knowledge. An auditor who understands how revenue is recognised in your industry beats a tidier process.
- Your auditor is set at group level. Where a parent or overseas group has appointed the firm, your Hong Kong entity doesn’t get to choose.
- An investor or lender requires a named firm. Facility and shareholder agreements sometimes specify the auditor, and breaching that costs more than coordination.
- You’re mid-audit with a fixed filing date. Switching now risks the deadline you’re protecting. Move after the return is in.
- Your bookkeeper is cheaper and your books are clean. If queries are rare and the handoff has worked for years, the overhead is small.
If you’re weighing a change of auditor, the criteria in our guide to choosing an external auditor apply whichever structure you land on.
When one provider is the better fit
Consolidation earns its keep when the handoffs are already costing you, not because it looks tidier.
- You’ve had a late or rushed filing in the last two years. That’s the symptom the single timetable treats.
- Your year end is code M. The runway is tightest exactly where handoffs are slowest.
- Nobody owns the year-end sequence. If “who is accountable for the filing date” returns a list of firms, one engagement closes that gap.
- Your bookkeeping needs judgement, not posting. Complex revenue recognition means more auditor queries, and each crosses a firm boundary.
How Sleek handles audit and tax filing together
You’ve got the constraint (audited accounts move with the return), the rule (R601.5 limits how far one firm can go), and the date (16 November 2026 for code M). What’s left is who owns the sequence.
With Sleek, you can:
- Keep one timetable: bookkeeping, statement preparation and the statutory audit run to the same year-end plan.
- Route auditor queries internally: ledger questions get answered by the team that maintained it, without you relaying.
- File with the supporting documents attached: audited accounts, tax computation and supplementary forms go in as one submission.
- See the fees before you commit: pricing is published rather than quoted case by case, and our accounting and audit FAQs set out what each scope includes.
What that looks like in practice sits on our audit and tax filing page. If your current split is working and your filings have been on time, keeping it is defensible. If they haven’t been, change the structure before your next year end rather than during it.
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FAQs about audit and tax filing in Hong Kong
No. Dormant companies within the terms of the Companies Ordinance (Cap. 622) are one of the three cases where the IRD does not require audited financial statements with the return. The relief covers the accounts, not the return, so if the IRD issues one you still file it. Confirm the company genuinely meets the dormancy test first.
Only if an audit was required or a report was prepared anyway. The IRD excepts companies incorporated where the law requires no audit and no auditor’s report exists. A Hong Kong branch of a foreign company can also file without them by supplying its place of incorporation, whether that jurisdiction requires a statutory audit, whether one was conducted, and a summary of the branch’s records.
Yes, a further month on application. The IRD grants an extra month beyond the block extension date where the return is e-filed through the Business Tax Portal, and the application must reach the department at least seven working days before the return is otherwise due. For a code M return due 16 November 2026, that means applying in early November.
You can, but it’s the riskiest time to do it. A new auditor inherits a period they haven’t observed, which means extra opening balance work and a longer first engagement. If your filing date falls in the next quarter, finish this year’s audit, file, then change.
The IRD can issue an estimated assessment or start penalty proceedings. Its circular to tax representatives states that where returns are not lodged by the extended due date, estimated assessments will be issued or penalty proceedings instituted under section 80 or section 82A of the Inland Revenue Ordinance. An estimated assessment is not a soft landing: the tax is payable on the IRD’s figure until you displace it.
View more
A signed independent auditor’s report with the audited financial statements, normally a PDF set you can forward to a bank or investor. The report carries the opinion; the statements carry the numbers your tax computation is built from. Our guide to what audited financial statements involve breaks down each component and the opinion types.
