Guide - bookkeeping

Monthly bookkeeping checklist for Singapore startups

A practical monthly close checklist for Singapore startup founders covering documents, reconciliations, invoices, expenses, payroll, and reports.

Workflow

Monthly close workflow

The best monthly close is simple enough to repeat. Separate the work into document collection, reconciliation, review, and reporting.

StageWhat to doWhy it matters
Before closeCollect invoices, receipts, bills, statements, payroll records, and payment reportsMissing documents are easier to recover while the month is fresh
During closeReconcile bank, card, Stripe, Wise, and payment gateway balancesReconciliations catch duplicate, missing, or miscategorised transactions
ReviewCheck revenue, expenses, receivables, payables, payroll, CPF, and founder transactionsFounders can spot cash and reporting issues before they compound
After closeSave P&L, balance sheet, cash, runway, AR, and AP reportsThe company keeps a monthly record for decisions, tax, and diligence
Documents

Collect every source document

Start with evidence. IRAS record-keeping guidance requires companies to retain records for at least 5 years from the relevant year of assessment, so documents should not live only in chat threads or laptop downloads.

  • Sales invoices and customer receipts
  • Supplier bills and SaaS invoices
  • Expense receipts and corporate card statements
  • Bank statements for every company account
  • Payroll and CPF records where applicable
  • Stripe, PayPal, Wise, marketplace, or payment gateway reports
Reconciliation

Reconcile accounts and revenue

Every month, match accounting records to external sources. Revenue is especially easy to misread when an invoice, payment gateway payout, transaction fee, and bank deposit all happen on different dates.

A clean reconciliation tells founders whether the books reflect what actually happened.

  • Match invoices issued to payments received
  • Record payment processing fees separately from revenue
  • Review unpaid invoices and overdue customer balances
  • Check supplier bills and upcoming payment obligations
  • Investigate transfers between founders, directors, and the company
Reports

Produce founder-friendly reports

The month should end with a small set of reports that a founder can actually use. More dashboards are not better if the core numbers are unreliable.

  • Profit and loss for the month and year to date
  • Balance sheet with bank, AR, AP, loans, and GST balances where applicable
  • Cash balance, burn rate, and runway
  • Accounts receivable and accounts payable aging
  • Open questions for the bookkeeper or accountant

This article is general information only and is not tax, legal, pricing, investment, or accounting advice. Check current official guidance and get professional advice for your company facts.

FAQ

Common questions

How often should a startup do bookkeeping?

Monthly is the practical baseline for most active startups. Weekly review can help high-volume businesses, but annual-only bookkeeping usually creates avoidable cleanup.

What happens if bookkeeping is only done once a year?

Year-end bookkeeping often means missing receipts, weak explanations, slower tax preparation, and less useful numbers during the year.

How long should Singapore company records be kept?

IRAS states that companies must retain records for at least 5 years from the relevant year of assessment.

Want the finance admin handled?

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