Quick answer
Employee claims for home internet in Singapore turn on one question: was the connection set up to enable working from home? If yes, the monthly subscription is claimable (installation fees never are, being capital); if the WiFi predates home working, no claim. Households with several home workers split shared costs equally. Sole traders deduct the business share as an ordinary expense, and GST-registered businesses claim the 9% GST on what they pay for.
Is internet tax deductible in Singapore?
For employees, IRAS’s working-from-home guidance draws an unusually specific line. The monthly WiFi subscription may be deducted only where the connection was set up so that you could work from home; a pre-existing household connection produces no additional expense, and under Singapore’s wholly-and-exclusively test, no deduction. One-time charges (installation, connection) are capital in nature and excluded even for a qualifying line. Where more than one member of the household works from home, IRAS accepts an equal split of the shared expense between them, its own example dividing a S$170 cost as S$85 each.
Businesses and sole traders answer the ordinary test instead: connectivity for the business deducts at the business share. An office or shopfront line is wholly business; a home connection supporting a home-run business is apportioned on a reasonable basis, in step with the wider home office claim. Employers reimbursing staff home internet keep the business-use portion non-taxable to the employee, which alongside the phone rules is how most Singapore firms actually support hybrid work.
How much can you claim?
Employee worked example: a developer signed up for a S$45 a month fibre plan when his employer moved to hybrid working, specifically to work from home; his flatmate also works from home on it two days a week. Each claims an equal share of the qualifying amount in their returns. His colleague, whose family fibre long predates hybrid work, claims nothing, and neither claims the S$120 installation fee, which is capital.
Sole trader worked example: an online seller runs the business from home on a S$65 a month connection, 55% business by use across the year: S$429 deductible in the accounts behind Form B.
| Situation | Treatment |
|---|---|
| Employee, WiFi set up to enable WFH | Monthly fee claimable; equal split across home workers |
| Employee, pre-existing connection | No claim |
| Installation and connection fees | Capital, never claimable |
| Sole trader | Business share as ordinary expense |
| Business premises connection | Fully deductible, full input tax |
GST on internet costs
The 9% input tax follows what the business itself buys: full recovery on office connectivity from tax invoices, restricted where costs deliver private benefits to staff under the fringe benefit rules. Employee income tax claims carry no GST recovery. As with every mixed cost, the share claimed on the GST return should match the share deducted for income tax.
Record-keeping requirements
Five years: the subscription agreement (whose date is what proves the set-up-to-work-from-home condition), monthly bills, the household split arrangement where shared, and the apportionment workings for business claims. The set-up date is the fact IRAS’s rule pivots on, so keep the sign-up confirmation, not just the bills.
How to claim, step by step
- Employees: check the two gates, set up to enable WFH, and not reimbursed. If both pass, the monthly fee is claimable.
- Exclude installation and one-time charges as capital.
- Split equally where multiple household members work from home, consistently across returns.
- Sole traders: set the business percentage, deduct the business share, and keep the basis in writing.
- GST-registered businesses claim 9% input tax on business connectivity from tax invoices.
- Keep agreements, bills, and workings for five years.
Common mistakes
- Claiming a family connection that existed before home working.
- Claiming installation or connection fees, which are capital.
- Household members claiming overlapping full amounts instead of equal shares.
- A sole trader’s GST claim out of step with the income tax apportionment.
- No record of the subscription start date, the fact the whole claim rests on.
Software that helps
- Hubdoc pulls the monthly provider bill automatically so the five-year file builds itself.
- ExpenseFlow captures connectivity bills each month, applies the business-use split you configure rather than a 100% claim, applies the 9% GST treatment to the claimable share, and syncs to Xero or QuickBooks with the bill attached.
- Dext does the same capture across a practice’s client base.
FAQ
See the answered questions above for the set-up rule, household splits, capital exclusions, sole traders, and GST.
From ExpenseFlow
GST coding on autopilot
ExpenseFlow reads every receipt, assigns the right GST treatment and account code, and syncs to Xero or QuickBooks Online once you approve.