7 Temasek Boulevard, #12-07 Suntec Tower One, Singapore 038987martin@prosecsingapore.com · +65 8898 4830
Singapore corporate services

Accounting & Corporate Tax Filing Singapore

ProSec supports Singapore SMEs, active companies and dormant companies with annual accounting, corporate tax filing and practical IRAS compliance guidance.

Annual accounting and corporate tax compliance support for Singapore SMEs, active companies and dormant companies that want clear filing guidance.

Accounting and tax compliance consultation for Singapore SMEs
Package

Annual Compliance Package from S$1,988/year.

ServicePriceTypical scope
Accounting & Tax — Annual ComplianceS$1,988/yearAnnual accounting compliance, unaudited financial statements and corporate tax filing support for suitable SME profiles.

Final fee depends on transaction volume, record quality, GST status, payroll, intercompany transactions and tax complexity.

Accounting records

Review and organise accounting records for annual financial statements and filing needs.

Corporate tax filing

Support for Singapore corporate tax filing, including Form C-S, Form C-S Lite or Form C where applicable.

Cross-border perspective

Practical understanding of foreign shareholders, overseas transactions and cross-border tax planning concerns.

Common add-ons

  • Bookkeeping cleanup
  • GST review and filing
  • Payroll and CPF support
  • Audit coordination
  • XBRL preparation where required
  • Cross-border tax filing coordination

Send us these first

  • Company UEN and financial year end
  • Bank statements and accounting records
  • Sales and purchase reports
  • Payroll / CPF information, if any
  • Prior year financial statements and tax filing, if available
Better fit, clearer scope

SMEs that need accounting records and tax filing support.

This page is the primary page for accounting services and tax filing services Singapore searches. The focus is bookkeeping, financial statements, ECI, Form C-S/Form C, GST review and year-end records.

This service is suitable for

  • Singapore SMEs that need annual bookkeeping, financial statements and corporate tax filing.
  • New companies that want to set up accounting records from the first financial year.
  • Dormant or low-transaction companies that need to understand ACRA and IRAS filing requirements.
  • Companies with overseas service income, trading income or consulting fees that need proper documentation.

May not be suitable without review

  • The company has no invoices, bank statements or supporting documents and is unwilling to reconstruct records.
  • The client expects tax filing without explaining unusual transactions or personal expenses.
  • The matter involves complex cross-border tax planning requiring a separate advisory scope.
  • The company has audit, investigation or dispute issues that should be separately reviewed.
Common client situations

Accounting and tax filing scenarios we review.

These examples focus on IRAS compliance and financial record readiness, not ACRA secretarial filing.

Scenario

First-year company unsure about ECI and tax filing

A new company may have only a few transactions but still needs to understand ECI, Form C-S or Form C filing. The key is to keep records from the start, rather than waiting until the tax deadline.

Scenario

SME with mixed business and personal payments

Many small companies start by paying expenses informally. Before filing tax, bank transactions, invoices, reimbursements and director or shareholder payments should be classified clearly.

Scenario

Company receiving overseas service income

If a Singapore company invoices overseas clients, it should keep service agreements, delivery evidence, invoices and payment records. This helps support both accounting treatment and tax filing positions.

Prepare before WhatsApp

Accounting and tax records to prepare.

Useful tax advice depends on bank statements, invoices, contracts, payroll records and explanations for unusual transactions.

Documents and information to prepare

  • Company UEN and financial year end
  • Bank statements for the financial year
  • Sales invoices and customer contracts
  • Supplier bills, expense receipts and payment proofs
  • Payroll, CPF, director fee and reimbursement records
  • Loan, capital injection or shareholder current account details
  • IRAS letters, prior tax filings and Notice of Assessment if available
  • GST registration status and GST returns if applicable

Basic compliance filing is not the same as detailed tax planning. If your structure involves multiple countries, related-party charges or unusual income flows, we should scope the advisory work separately.

Tax and filing guide

Accounting and Tax Compliance Guide for Singapore SMEs

Accounting and tax compliance should be planned throughout the year, not only when a filing deadline arrives. A Singapore company should maintain proper accounting records, supporting invoices, bank statements, expense documents, payroll records where applicable and explanations for major transactions. Clean records make it easier to prepare financial statements, compute taxes, respond to IRAS questions and support future banking or audit needs.

A practical IRAS tax calendar starts with the company’s financial year end. Estimated Chargeable Income, commonly known as ECI, is generally filed within three months after the financial year end unless the company qualifies for an administrative waiver. Corporate income tax returns, such as Form C-S, Form C-S Lite or Form C, are generally filed annually according to IRAS filing timelines. The correct form depends on the company’s size, income, tax position and eligibility conditions.

Some companies may also need XBRL filing. XBRL is a structured digital reporting format used for financial statements filed with ACRA. Whether full XBRL, simplified XBRL or no XBRL is required depends on the company type, financial statement position and applicable ACRA filing rules. Dormant companies should not assume there is nothing to do. They may still need to maintain basic records, consider IRAS filing requirements, apply for waiver where applicable and file annual returns with ACRA.

Audit exemption should also be reviewed carefully. A company may qualify as a small company if it meets the relevant criteria relating to revenue, assets and employee numbers, but the position should be checked based on the latest financial information and group structure. ProSec helps SMEs organise their accounting records, prepare annual compliance documents and understand what must be filed with ACRA and IRAS.

Deep service guide

How accounting and tax filing should support real business decisions

Accounting and tax compliance is not only about filing a form at year end. For a Singapore company, good records help directors understand profit, cash flow, tax exposure, dividend readiness, GST risk, audit exemption position and whether the company’s public filings are consistent with its commercial reality.

Bookkeeping quality before tax filing

Tax filing becomes difficult when bank statements, invoices, receipts, payroll records and shareholder transactions are incomplete. Before preparing Form C-S, Form C-S (Lite) or Form C, the company should review whether the accounting records explain income, expenses, loans, director payments and cross-border receipts clearly.

ECI and corporate income tax calendar

Companies should understand the relationship between financial year end, estimated chargeable income and the annual corporate income tax return. A company may qualify for an ECI filing waiver, but that does not automatically remove the obligation to file the annual corporate income tax return where required.

GST monitoring before it becomes urgent

GST is not only a year-end issue. Companies should monitor taxable turnover, especially when revenue is growing, recurring contracts are signed or cross-border service income changes. Where taxable turnover exceeds the compulsory registration threshold, registration timing and charging GST should be planned carefully.

Dormant and low-activity companies still need review

A dormant or low-activity company may still have ACRA and IRAS obligations. The right approach depends on whether the company has income, expenses, assets, liabilities, bank activity, waiver status and whether it remains live on the register.

Current IRAS guidance requires companies to file Form C-S, Form C-S (Lite) or Form C by 30 November each year, unless a specific position applies. The form type depends on the company’s profile, revenue and eligibility conditions. For example, Form C-S (Lite) is intended for smaller qualifying companies, while Form C may require supporting financial statements, detailed profit and loss statement, tax computation and other documents.

For SMEs, one common risk is treating annual accounting as a once-a-year cleanup. This often creates pressure when tax deadlines, bank reviews or shareholder questions arise. A better approach is to maintain a monthly or quarterly document trail, including invoices, contracts, receipts, payment proofs, staff costs, director remuneration and explanations for unusual transactions.

Accounting also interacts with corporate secretarial compliance. ACRA Annual Return filing may require financial statement readiness, and directors should understand whether the company is dormant, solvent, audit-exempt or required to file financial statements in XBRL. Where the company is foreign-owned or has overseas income, additional explanation may be needed for banks, auditors, tax agents and shareholders.

Documents that usually make accounting and tax work smoother

  • Bank statements for the full financial period
  • Sales invoices, purchase invoices, receipts and payment proofs
  • Customer and supplier contracts, especially cross-border agreements
  • Payroll, CPF, director fee and reimbursement records where applicable
  • Prior year financial statements, tax computation and IRAS correspondence
  • GST, XBRL or audit-related documents if relevant
FAQ

FAQ about accounting and tax filing in Singapore

Does every Singapore company need to prepare accounts?

Yes. A company should keep proper accounting records and supporting documents. Even a small or dormant company should be able to explain its financial position, transactions and filing basis when required.

Does a dormant company need to file tax?

A dormant or inactive company may still have filing obligations unless it qualifies for the relevant waiver or dormant company filing treatment. The position should be checked based on the company’s actual activity and IRAS requirements.

What is the difference between bookkeeping, financial statements and tax filing?

Bookkeeping records transactions. Financial statements summarise the company’s financial position and performance. Tax filing reports taxable income and tax adjustments to IRAS. A company often needs all three to be consistent.

What documents should I provide for accounting?

Provide bank statements, sales invoices, purchase invoices, expense receipts, payroll records, loan or director current account details, GST records if applicable, and any prior year financial statements or tax filings.

How often should bookkeeping be done?

It depends on transaction volume. Active companies should update records regularly instead of waiting until the tax deadline. This reduces missing documents, late filing pressure and inconsistent annual return information.

What is ECI and when must it be filed?

Estimated Chargeable Income is a preliminary tax filing based on the company’s estimated taxable income. Some companies may qualify for ECI filing waiver, but that does not automatically remove the need to file the annual corporate income tax return.

What is Form C-S, Form C-S Lite and Form C?

They are different types of corporate income tax return. Which form applies depends on revenue, company profile and eligibility conditions. Even companies with no income or losses may still need to file the relevant return.

Does ProSec handle GST filing?

GST support may be provided as an add-on depending on whether the company is GST-registered, transaction volume, export sales, input tax claims and record quality. GST should be reviewed before filing to reduce error risk.

Can ProSec help if previous accounts were not properly maintained?

Yes. We can review available records and advise whether cleanup, reconstruction or prior-year correction is needed. The fee depends on transaction volume, missing documents, bank accounts and complexity.

Can accounting and corporate secretary service be handled together?

Yes, and this is often more efficient. Annual return filing, financial statements and corporate tax filing rely on related information, so coordinating secretary and accounting work can reduce inconsistencies.

What affects accounting and tax service fees?

Main factors include transaction volume, number of bank accounts, GST status, payroll, intercompany transactions, overseas income, missing records, urgency and whether prior years need cleanup.

Need accounting and tax filing support?

Send us your UEN, financial year end and whether your company is active or dormant. We will advise the next step.

WhatsApp Us Now
WhatsApp ProSec