Live in Singapore1 of 27 countries

Accounting software for Singapore businesses

For limited companies, sole traders and the accountants who look after them. Finn is the AI accountant inside AccountsOS, and it works for Singapore private limited companies, sole proprietorships, partnerships and LLPs.

  • Data held in the EU
  • Real double-entry ledger
  • No card to start
FinnSingapore business
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What is my GST for this quarter, and when do I file the F5?
Your GST for the quarter is SGD 6,840: output tax SGD 11,700 minus input tax SGD 4,860. File the GST F5 by 31 October for a quarter ending 30 September. Last quarter's payment went out on 31 July and is reconciled to the bank.
Output tax11,700
Input tax4,860
To pay6,840
Source: Inland Revenue Authority of Singapore, GST F5 return

Example figures. Finn answers from your own ledger, with the source beside every number.

Built for you

Three ways Singaporean businesses use Finn

Sole traders

Sole proprietors

A sole proprietorship is registered with ACRA and has a UEN. The profit is taxed on your personal return at progressive rates from 0% to 24%, with the first SGD 20,000 tax-free. Finn keeps the books in Singapore dollars and watches the SGD 1 million GST limit.

  • Personal tax estimated from your ledger
  • GST limit watched at SGD 1 million
  • Individual return figures prepared
S$16/monthStart free
Limited companies

Pte Ltd companies

Finn tracks your ECI date three months after year end, the Form C-S or Form C date of 30 November and the quarterly GST F5, and gives you the figures for each. It also applies the Start-Up and Partial Tax Exemptions against the 17% rate and keeps the ACRA annual return on the calendar.

  • ECI and Form C-S figures prepared
  • Start-Up and Partial Exemptions applied
  • CPF and SDL payroll dates tracked
S$32/monthStart free
Accountants

Run your client book on Finn

Singapore accounting and corporate service firms can run the whole client book on Finn. Finn works as a colleague on your team and does the production work: bank lines, receipts, GST and CPF figures. You review and sign. Allocate each client to a team member, see every client's deadlines in one list, and bring books in by CSV.

  • Every client's deadlines in one list
  • Clients allocated to team members
  • Migrate client books by CSV
Flat price per live clientFor accountants
Yes, AccountsOS is live in Singapore. Finn knows Inland Revenue Authority of Singapore (IRAS), Accounting and Corporate Regulatory Authority (ACRA) and SGD (S$), and supports Private Limited Company (Pte Ltd), Sole Proprietorship, Partnership entities out of the box, with tax figures always cited to an official source.
Your Singaporean tax year at a glance

Every deadline Finn tracks

All deadlines with sources
  • 14 OctCPF and SDLFor September wages
  • 31 OctGST F5Quarter Jul-Sep
  • 30 NovCorporate tax returnForm C-S or C, YA 2026
  • 31 JanGST F5Quarter Oct-Dec
  • 31 MarECI filingDec year end
  • 30 AprGST F5Quarter Jan-Mar
  • 31 JulACRA annual returnDec year end
9%GSTSince 1 January 2024
17%Corporate taxFlat, before exemptions
SGD 1mGST thresholdTaxable turnover
75%Start-up exemptionOn first SGD 100k
17%Employer CPFEmployees 55 and below

Rates from Inland Revenue Authority of Singapore (IRAS), checked 2026-09-30. Finn cites the page it used every time it quotes one.

Bookkeeping software for Singapore: bank feeds, receipts and a multi-currency ledger

Finn keeps your books in Singapore dollars, with dates in day, month, year order, and handles the US dollar and other currency activity that many Singapore companies have. Bring in bank activity by uploading a CSV or PDF statement, or by connecting Mercury, Wise, Stripe or Revolut where you use them. Finn categorises each line with your business context and flags anything unclear for review.

Receipts and invoices go straight to Finn. Email one in, or send a photo by WhatsApp, Telegram or Slack, and Finn reads it, matches it to the bank line and records the GST. At month end Finn reviews the ledger and raises exceptions, you clear them, and the period is locked.

  • Categorises transactions using your own business context
  • Handles SGD and foreign currency activity in one ledger
  • Matches receipts and invoices to payments
  • Records GST on purchases and sales where you are registered
14 OctThe CPF and SDL lands on 14 Oct. Finn puts it on your calendar and reminds you ahead of it.

Singapore GST return software: 9% GST, the F5 return and InvoiceNow

Singapore GST is 9%, raised from 8% on 1 January 2024. Exports and international services are zero-rated, while financial services and residential property are exempt. Registration is compulsory once taxable turnover exceeds S$1 million, looking back over 12 months or forward over the next 12. Below that you may register voluntarily, with conditions.

Registered businesses file the GST F5 return for each accounting period, usually quarterly, within one month of the period end through the myTax Portal. Finn prepares the figures for each F5 and tells you what is payable. GST InvoiceNow, Singapore's e-invoicing requirement based on Peppol, is rolling out in stages to all GST-registered businesses by 2031, and Finn tracks where it applies to you.

  • Prepares the figures for each quarterly F5
  • Watches turnover against the S$1 million threshold
  • Separates standard-rated, zero-rated and exempt supplies
  • Tracks the InvoiceNow rollout dates

Corporate tax in Singapore: 17%, ECI, Form C-S and tax exemptions

Corporate income tax is a flat 17% on chargeable income. New qualifying companies get the Start-Up Tax Exemption for their first three Years of Assessment, which exempts 75% of the first S$100,000 and 50% of the next S$100,000. Every company gets the Partial Tax Exemption on 75% of the first S$10,000 and 50% of the next S$190,000. Dividends are tax-exempt in shareholders' hands.

You file the Estimated Chargeable Income (ECI) within three months of the financial year end, unless annual revenue is S$5 million or less and the ECI is nil. The corporate tax return is due by 30 November, on Form C-S for qualifying small companies, C-S (Lite) for revenue of S$200,000 or less, or Form C for everyone else. Finn prepares the profit figures behind each.

Singapore payroll software: CPF, SDL and foreign employees

The Central Provident Fund (CPF) is mandatory for Singapore Citizens and Permanent Residents only, not for foreign employees. For employees aged 55 and below the rates are 17% from the employer and 20% from the employee, tapering with age, on monthly wages up to the Ordinary Wage ceiling, which is S$7,400 from 1 January 2025 and rises to S$8,000 in 2026.

The Skills Development Levy (SDL) applies to all employees working in Singapore, including foreigners, at 0.25% of monthly wages, with a minimum of S$2 and a maximum of S$11.25. CPF and SDL are paid to the CPF Board monthly. Finn records wages, CPF and SDL in your ledger so payroll cost shows correctly in your profit, and the submissions go through your payroll route.

ACRA annual return, BizFile and company requirements in Singapore

A private company must hold its annual general meeting within six months of its financial year end and file its Annual Return with ACRA through BizFile within seven months. A private company may skip the AGM if it sends its financial statements to members within five months. The Annual Return is separate from the IRAS tax return, and Finn tracks both dates.

A Pte Ltd can be formed with paid-up capital of S$1, has limited liability, and needs at least one locally resident director. Every registered entity has a Unique Entity Number (UEN). A small private company is exempt from audit if it meets two of three tests: revenue of S$10 million or less, assets of S$10 million or less, and 50 employees or fewer.

Sole proprietorships and small business in Singapore

A sole proprietorship is not a separate legal entity, so the owner is taxed on the business income at personal resident rates. Those rates are progressive from 0% to 24%, with the first S$20,000 of chargeable income tax-free. The business is registered with ACRA and receives a UEN, and GST follows the same S$1 million threshold as for companies.

Singapore has no capital gains tax, although gains that are trading in nature can still be taxed as income, and it taxes foreign-sourced income only when it is received in Singapore. Finn keeps income and expenses in order through the year so your personal return and any GST filing start from clean figures.

Switching from Xero, QuickBooks or Zoho Books

Many Singapore businesses are on Xero, QuickBooks or Zoho Books, often with a bookkeeper or corporate secretary alongside. Switching is a CSV export and an upload. Export your transactions, contacts and chart of accounts from the old package, and Finn maps the columns itself without a template or any manual reformatting.

There is no lock-in, and your accountant or corporate secretary can keep access to review the books. A clean switch date is the start of a GST quarter, so the quarter's figures sit in one system. Finn carries across open invoices and bills, so customers and suppliers keep their balances.

Finn at work in Singapore

One accountant, 27 countries, the same ledger

  • Finn flagged a VAT deadline for a business in Singapore
See all 27 countries

Singaporean terms Finn understands

Full glossary
IRAS
The Inland Revenue Authority of Singapore, the tax authority, whose myTax Portal is used for filing.
ACRA
The Accounting and Corporate Regulatory Authority, the company registry, filed through BizFile.
UEN
Unique Entity Number, the single identifier for every registered entity, usually also the GST number.
Year of Assessment
The year in which income earned in the prior financial year is taxed.
ECI
Estimated Chargeable Income, a company's estimate of taxable income filed within three months of year end.
Form C-S
The simplified corporate tax return for qualifying small companies, due by 30 November.
Switching

Switching from Xero, QuickBooks or Zoho Books

Many Singapore businesses are on Xero, QuickBooks or Zoho Books, often with a bookkeeper or corporate secretary alongside. Switching is a CSV export and an upload. Export your transactions, contacts and chart of accounts from the old package, and Finn maps the columns itself without a template or any manual reformatting.

  1. 01ExportAccounts, contacts, invoices and bank lines as CSV from your current tool.
  2. 02Drop it on FinnFinn reads the columns, maps your chart of accounts and asks only where it is unsure.
  3. 03Opening balancesLast year from your filed accounts, this year live. Reconciled before you rely on it.

Can I claim it? Singapore expenses

All expenses

Home Office Expenses

Partial

Partially deductible. There is no flat-rate home office deduction in Singapore. A company can reimburse directors or employees for actual, documented home office costs at arm's length, and those reimbursements are deductible as business expenses.

Staff Salaries and CPF

Yes

Fully deductible. Salaries, wages, bonuses, and employer CPF contributions (17%, capped at S$1,258/month on ordinary wages) are all deductible as business expenses. The Skills Development Levy (SDL) is also deductible.

Professional Fees (Audit, Accounting, Legal)

Yes

Fully deductible where incurred for revenue purposes. Accountancy fees, audit fees, company secretarial fees, and legal fees for ongoing trading operations are all deductible. Legal fees relating to capital transactions (acquisitions, share issues) are not.

Travel and Transport Expenses

Partial

Business travel is fully deductible. Personal travel embedded in a business trip is not deductible. There is no standard per-km mileage rate in Singapore; actual cost or car rental costs are used.

Motor Vehicle Expenses

Partial

Running costs (fuel, maintenance, road tax, insurance) for S-plate business vehicles are deductible. Capital allowances are not available for Singapore-registered private cars. The COE (Certificate of Entitlement) cost is capital and not deductible.

Entertainment and Business Meals

Yes

50% deductible for qualifying entertainment expenses under section 14(2A). Staff entertainment (e.g., annual dinner and dance) is fully deductible. Receipts and a log of who was entertained and the business purpose are essential.

Questions Singaporean founders ask

Is AccountsOS compliant with IRAS requirements?

Finn prepares your books and the figures for GST, corporate tax and payroll against IRAS's published rules and cites iras.gov.sg. You file through myTax Portal yourself, or your accountant does. AccountsOS does not file with IRAS on your behalf.

Can Finn file my GST F5 return?

Finn prepares the figures for each F5 and tells you the amount payable and the due date. The filing is made through myTax Portal by you or your accountant.

When do I need to register for GST in Singapore?

When taxable turnover exceeds S$1 million, measured over the past 12 months or expected over the next 12. Voluntary registration below that is possible with conditions.

How much corporate tax does a Singapore company pay?

A flat 17% of chargeable income, reduced for most small companies by the Start-Up Tax Exemption and the Partial Tax Exemption. Rebates change each Budget, so Finn checks the current year.

When is my Singapore corporate tax return due?

The return is due by 30 November each year, and the Estimated Chargeable Income is due within three months of your financial year end.

Can Finn file my ACRA annual return?

Finn tracks your AGM and Annual Return dates, six and seven months after year end, and keeps the ledger ready for your financial statements. The filing is made through BizFile by you or your corporate secretary.

Does AccountsOS handle CPF and SDL?

Finn records wages, CPF and Skills Development Levy in your ledger. CPF applies only to citizens and permanent residents, and the submissions go through your payroll route.

Can I switch from Xero or QuickBooks to AccountsOS?

Yes. Export transactions, contacts and your chart of accounts as CSV and upload them. Finn maps the columns itself and your data stays exportable, so there is no lock-in.

Does AccountsOS support businesses in Singapore?

Yes. AccountsOS is fully live in Singapore, with Finn aware of Inland Revenue Authority of Singapore (IRAS), Accounting and Corporate Regulatory Authority (ACRA), SGD (S$) and local entity types (Private Limited Company (Pte Ltd), Sole Proprietorship, Partnership).

What entity types does AccountsOS support in Singapore?

Private Limited Company (Pte Ltd), Sole Proprietorship, Partnership, Limited Liability Partnership (LLP), Limited Partnership (LP), Branch of Foreign Company. Each has its own tax treatment, filing requirements and default settings configured out of the box.

Can Finn file taxes directly with Inland Revenue Authority of Singapore (IRAS)?

No. Finn does not file with Inland Revenue Authority of Singapore (IRAS) for you. Finn keeps your books, tracks your Inland Revenue Authority of Singapore (IRAS) deadlines and gives you the figures. You or your accountant file. Finn always cites Inland Revenue Authority of Singapore (IRAS) sources when it quotes a rate, threshold or deadline.

What currency and date format does AccountsOS use for Singapore?

SGD (S$) throughout, with dates shown as DD/MM/YYYY. No manual conversion needed.

Can I run a company in Singapore alongside businesses in other countries?

Yes. One login covers multiple companies across any of AccountsOS's supported countries, switch between them with a click, and Finn loads the correct tax rules, currency and entity settings automatically for each.

Is my country not listed, or do I need a bespoke setup for a large client book?

We build custom country rollouts and tailored practice migrations quickly: see accounts-os.com/custom-rollout.

For founders

Stop dreading your Singaporean accounts

Connect a bank, forward a receipt, ask Finn a question in plain English. Free for 14 days, no card.

Start free
For accountants

Run your Singaporean client book on Finn

Finn does the production work across every client. Your team reviews, signs and files. Flat pricing per live client.

See practice pricing