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Progressive Invoicing in Singapore

Writer: Roger Pay
Roger Pay
5 hours ago
5 min read

Is it better to invoice exact amount for each partial payment or invoice in full and client pays progressively?


Progressive Invoicing in Singapore | Bestar
Progressive Invoicing in Singapore | Bestar

Progressive Invoicing in Singapore


Invoicing the exact amount for each partial or milestone payment is almost always the better option.


While both methods can work practically depending on your software, issuing progressive invoices aligns best with Singapore accounting practices, IRAS Goods and Services Tax (GST) rules, and healthy cash flow management.


Comparison of Methods

Metric

Option A: Invoicing Exact Amount (Progressive Invoicing)

Option B: Full Invoice + Partial Payments

Best For

Long-term projects, milestone-based deliverables, retainers, construction/tech work.

Simple one-off orders where the customer just needs a short payment extension or standard payment terms.

IRAS GST Impact

Clean compliance. GST is accounted for based on actual partial tax invoices issued or payments received.

Tax liability risk. Under IRAS "Time of Supply" rules, issuing a full tax invoice triggers GST liability for the entire amount immediately.

Revenue Recognition

Matches income directly to milestones or partial deliverables.

Artificially inflates Accounts Receivable (A/R) for unearned future work.

Client Clarity

Clear and actionable—the client sees exactly what is due now.

Can cause confusion for corporate clients whose Accounts Payable (AP) teams match payments 1:1 against invoice totals.


Key Reasons Progressive Invoicing is Superior in Singapore


  1. IRAS GST Tax Point Rules (Critical for GST-Registered Businesses):


    • Under the Inland Revenue Authority of Singapore (IRAS) "Time of Supply" rule, GST becomes payable to IRAS on the date a tax invoice is issued or when payment is received, whichever is earlier.   


    • If you issue a $10,000 invoice upfront, IRAS considers the full supply invoiced, meaning you owe the 9% GST ($900) in that accounting period—even if the client only pays you a $2,000 partial deposit.


    • If you issue progressive invoices ($2,000 deposit, then milestone invoices), you only account for and pay output GST on the $2,000 actually invoiced.


  2. Corporate Accounts Payable Friction:


    • Many established businesses and corporate AP departments in Singapore require a matching invoice for the exact payment voucher they cut.


    • Sending a full invoice and taking partial payments often causes internal delays on their end or results in awkward leftover ledger balances.


  3. InvoiceNow / e-Invoicing Compatibility:


    • Singapore’s nationwide e-invoicing network (InvoiceNow / Peppol format) and IRAS digital GST tracking are designed around structured, document-level reporting. Partial receipts applied against a large master invoice are harder to reconcile automatically across business accounting systems compared to 1:1 milestone invoices.   


Recommended Workflows


Best Practice: Progressive / Milestone Invoicing


  1. Issue an Initial Invoice for the Deposit/Milestone 1: Label it clearly (e.g., "Invoice 1 of 3: 30% Advance Deposit for Project X").


  2. Issue Subsequent Invoices as Milestones are Met: Cross-reference the parent contract or quotation number so the client can track the total budget.


  3. Issue a Final Summary / Invoice: Show total project value, less previous invoices, leaving the net balance due.


Alternative: Advanced Deposit / Credit Note Handling


If you require full commitment upfront before starting:


  • Issue a Pro-Forma Invoice or Deposit Request (non-tax document) for the overall scope.


  • Convert or issue progressive tax invoices as payments are made or milestones are delivered.   


How Bestar Singapore Can Help: Complete Corporate, Accounting, & Tax Advisory Guide


Expanding, managing, or scaling a business in Singapore requires navigate complex regulatory standards set by the Accounting and Corporate Regulatory Authority (ACRA) and the Inland Revenue Authority of Singapore (IRAS). Bestar Singapore serves as a trusted corporate service provider, helping local entrepreneurs, growth enterprises, and multinational corporations maintain compliance, reduce tax burdens, and scale efficiently.   


Direct Answer: How Bestar Singapore Supports Your Business


Bestar Singapore delivers end-to-end corporate services, including:


  1. Company Incorporation & Business Setup: Fast-tracked Singapore company registration, foreign subsidiary establishment, and virtual office services.


  2. Corporate Secretarial Services: Statutory ACRA compliance, board resolutions, annual return filings, and nominee director provisions.   


  3. Accounting & Bookkeeping: Cloud accounting (Xero/QuickBooks), monthly management reports, and Singapore Financial Reporting Standards (SFRS) compliance.   


  4. Tax Advisory & Optimization: Corporate income tax return preparation (Form C-S/C), GST registration/quarterly filings, and tax incentive optimization.   


  5. Audit, Assurance & Advisory: Independent financial audits, internal control reviews, and risk management consulting.   


  6. Work Passes & HR Solutions: Ministry of Manpower (MOM) pass applications (Employment Pass, S Pass), payroll outsourcing, and employment compliance.   


Core Services & Strategic Value


1. Singapore Company Incorporation & Market Entry


Registering a business in Singapore requires meeting strict statutory requirements, such as appointing at least one local resident director and securing a registered physical address. Bestar streamlines market entry for both local founders and foreign enterprises.   


  • Fast Registration: Full handling of ACRA name reservation and official company incorporation.


  • Nominee Director & Registered Office Services: Providing compliant local resident nominee director arrangements and central business district (CBD) virtual addresses.   


  • Bank Account Opening Support: Guiding businesses through corporate banking application processes with Singapore’s major banks.


2. Corporate Secretarial & Regulatory Compliance


Under Section 171 of the Singapore Companies Act, every private limited company must appoint a qualified corporate secretary within six months of incorporation.


  • ACRA Compliance Management: Preparing and filing Annual Returns, XBRL financial statements, and managing statutory registers.   


  • Corporate Governance: Drafting board minutes, AGM documentation, share transfers, and capital restructuring.   


3. Cloud Accounting, Bookkeeping & Payroll Outsourcing


Maintaining clear, SFRS-compliant accounts is necessary for regulatory compliance and securing growth capital. Bestar implements modern cloud software to eliminate bookkeeping bottlenecks.   


Raw Financial Data ➔ Cloud Accounting (Xero) ➔ SFRS Compliance Review ➔ Monthly Management Reports
  • Routine Bookkeeping: Daily transaction recording, bank reconciliations, and general ledger maintenance.


  • Payroll & CPF Outsourcing: Computing wages, managing Central Provident Fund (CPF) contributions, and generating itemised payslips and IR8A forms.


4. Precision Tax Advisory & IRAS Compliance


Navigating Singapore’s tax system requires strategic planning to maximize allowable deductions while staying fully compliant with IRAS guidelines.   


Service Area

Bestar Solution

Business Benefit

Corporate Tax

Form C-S / Form C preparation, tax computation, and claim optimization.

Maximizes Start-up Tax Exemption (SOTE) and Partial Tax Exemption schemes.

GST Management

Quarterly GST return filing, registration/deregistration, and e-invoicing.

Prevents late filing penalties and ensures accurate input tax claims.

Cross-Border Tax

Transfer pricing documentation and double tax agreement (DTA) consulting.

Minimizes global double taxation risks for expanding multinationals.


Frequently Asked Questions


Why should a foreign enterprise hire Bestar to set up in Singapore?


Bestar assists foreign companies by providing local nominee director services, setting up local registered offices, obtaining Employment Passes for key expats, and ensuring international branch offices align with local ACRA and IRAS requirements.   


What is the process for switching corporate secretarial or accounting services to Bestar?


Switching providers requires minimal operational effort:


  1. Bestar conducts a review of your statutory records and current ledgers.


  2. Bestar prepares the formal resignation of the previous secretarial/accounting firm and draft board resolutions.


  3. Your statutory registers and cloud software access are transferred securely to Bestar's team.


Partner with Bestar Singapore

Streamline your company’s corporate compliance, tax obligations, and accounting operations.   


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