If you run a trading company in Hong Kong, proper bookkeeping isn’t just good practice—it’s the law. With the trading sector alone contributing over 15% of Hong Kong’s GDP and supporting nearly 400,000 jobs, the Inland Revenue Department (IRD) and Companies Registry expect meticulous record-keeping.

This guide breaks down the eight essential records every Hong Kong trading company must maintain to stay compliant, avoid penalties of up to HK$100,000, and prepare smoothly for annual audits. Whether you’re a small import-export firm or a larger merchanting operation, these fundamentals apply to you.

Why Trading Companies Face Stricter Scrutiny

Hong Kong’s trading and logistics sector is one of the city’s four economic pillars. In 2024, it generated HK$588.2 billion in value added (18.9% of GDP) and employed 555,200 people. Within this, pure trading activities contributed HK$475.6 billion (15.3% of GDP) and employed 384,400 workers.

There were 95,192 import-export trading establishments as at December 2024, with total merchandise trade reaching US$1,213 billion (HK$9,465 billion) that year. Offshore trade alone was valued at US$639 billion (HK$4,987 billion) in 2023.

These numbers matter because they reflect the complexity and scale of transactions IRD auditors expect to see properly documented. Trading companies deal with multi-currency flows, landed costs, stock valuation, and cross-border documentation—far more than service businesses.

The Legal Framework: What the Law Requires

Two key laws govern your bookkeeping obligations:

• Inland Revenue Ordinance (Section 51C): Requires all businesses to keep sufficient records in English or Chinese for at least seven years from the transaction date. Failure can result in fines up to HK$100,000.
• Companies Ordinance (Sections 373 & 377): Requires accounting records that explain transactions and disclose financial position, retained for seven years from the end of the relevant financial year. Directors face fines up to HK$300,000 for serious breaches.

Records can be kept electronically, provided they remain legible, accessible, and backed up for the full retention period.

The 8 Essential Records Every Trading Company Must Keep

1. Sales Invoices and Accounts Receivable Ledger

Every sale must be documented with a detailed invoice showing:

• Customer name and identity
• Description, quantity, and value of goods
• Currency (HKD, USD, RMB, etc.)
• Invoice date and payment terms
• Delivery notes or shipping references

Your sales ledger should track all outstanding receivables, credit notes issued, and aging reports. This directly supports IRD requirements for “records of all goods sold” with buyer identification.

2. Purchase Invoices and Accounts Payable Ledger

For every purchase, retain:

• Supplier name and identity
• Item description, quantities, unit costs
• Incoterms and landed cost components (freight, insurance, duties)
• Payment terms and due dates

Your purchase ledger should reconcile with bank outflows and feed into cost-of-goods-sold calculations. IRD specifically requires “records of all goods purchased” with seller details.

3. Day-by-Day Cash Book and Bank Reconciliations

Maintain a daily record of all money received and paid, supported by:

• Bank statements (all accounts)
• Monthly bank reconciliations
• Petty cash vouchers and receipts

This is a core IRD requirement. In audits, reconciled cash books are often the first thing examiners request. Discrepancies here can trigger deeper investigations.

4. Inventory and Trading Stock Records

Trading companies must keep:

• SKU-level inventory sub-ledgers (quantities, unit costs, warehouse locations)
• Year-end stock valuation reports (lower of cost or net realisable value)
• Physical stocktake sheets signed and dated
• Reconciliation of book stock vs. physical counts

IRD requires “statements of trading stock” at each year end, backed by actual stocktake records—not estimates. Consistency in valuation methods year-over-year is critical to avoid scrutiny.

5. Shipping, Customs, and Trade Documentation

Every shipment should have a complete paper trail:

• Bills of lading or airway bills
• Packing lists and commercial invoices
• Import/export declarations
• Certificates of origin
• Trade finance documents (letters of credit, etc.)

These documents verify the movement and value of goods, supporting your purchase and sales records. They’re especially important for offshore trade and transfer pricing reviews.

6. Contracts, Agreements, and Fixed Asset Records

Retain all contracts with financial terms:

• Long-term supply or distribution agreements
• Lease agreements for warehouses or offices
• Loan and trade finance facility documents
• Fixed asset register (purchase cost, depreciation, disposals)

These support your balance sheet and help explain large transactions or commitments during audits.

7. Payroll and MPF Records

If you have employees, keep:

• Monthly payroll summaries
• MPF contribution schedules and proof of payment
• Employment contracts and variation letters
• Leave, bonus, and allowance records

Employers must retain payroll records for at least seven years. These also feed into your profit-and-loss statement and are routinely checked in IRD reviews.

Explore our payroll services if you need help staying compliant with MPF and employment regulations.

8. General Ledger, Trial Balance, and Financial Statements

Your general ledger is the backbone of compliance:

• Full chart of accounts with proper coding
• All journals posted and reviewed
• Monthly or quarterly trial balances
• Year-end financial statements prepared on an accrual basis

These records must be sufficient to “readily ascertain assessable profits” under Section 51C. They also form the basis for your annual audit and profits tax return.

 

Retention Periods and Penalties at a Glance

Requirement	Retention Period	Maximum Penalty
IRD Section 51C (business records)	7 years from transaction date	HK$100,000 fine
Companies Ordinance (accounting records)	7 years from financial year end	HK$300,000 fine + possible imprisonment
Payroll and MPF records	7 years	HK$100,000 (IRD) + MPF authority penalties
Stocktake and inventory records	7 years from year end	HK$100,000 if inadequate for audit

Note: The seven-year rule is a minimum. If you have loss carry-forwards or open assessments, keep records longer.

Common Pitfalls Trading Companies Should Avoid

• Mixing personal and business expenses: This complicates profit ascertainment and invites IRD queries.
• Incomplete landed cost tracking: Only recording invoice price without freight, insurance, or duties understates cost of goods sold and inflates margins.
• Missing stocktake documentation: Year-end stock statements without underlying physical counts are not compliant.
• Poor multi-currency reconciliation: Unreconciled USD, RMB, or HKD balances create audit risks.
• Delayed bookkeeping updates: Waiting until year-end to reconcile makes errors harder to trace and increases audit costs.

Many trading firms benefit from outsourcing their bookkeeping and accounting to ensure these fundamentals are handled correctly from day one.

How This Supports Your Annual Audit and Tax Filing

Hong Kong companies must undergo an annual statutory audit by a certified public accountant. Clean, complete records make this process faster, cheaper, and less stressful.

Your auditor will expect:

• Reconciled ledgers matching bank statements
• Stock valuation reports backed by stocktakes
• Full supporting documentation for material transactions
• Accurate accruals and prepayments

Once audited, your financial statements feed into your profits tax return. Incomplete records can lead to IRD estimates, penalties, or extended enquiries.

When to Seek Professional Help

If any of the following apply, consider engaging a Hong Kong accounting firm:

• You’re unsure whether your records meet IRD standards
• You’ve received an IRD query or audit notice
• Your bookkeeping is months behind
• You’re launching a new trading entity and want to set up correctly from the start

Our team at Pinetree specialises in trading company compliance, from company formation and corporate secretarial services to ongoing bookkeeping, audit coordination, and tax filing.

We also support immigration documentation for founders and key staff relocating to Hong Kong.

Final Thoughts: Compliance Is an Investment, Not a Cost

Proper bookkeeping protects your business from fines, reduces audit friction, and gives you real-time visibility into margins, cash flow, and stock levels. For trading companies operating in one of the world’s busiest ports, that clarity is invaluable.

Start with these eight record types, ensure they’re updated monthly, and retained for at least seven years. If you’d like a free 15-minute consultation with our Hong Kong accounting team to review your current setup, reach out via WhatsApp or phone—we’re here to help, whether or not you choose to work with us long-term.