If you rent out a residential property in Singapore in 2027, start with the gross rent and related taxable amounts due for the relevant period. Then compare the allowable actual expenses with IRAS’s 15% deemed-expense option if you qualify. Allowable mortgage interest can be claimed separately from the deemed amount. Mortgage principal is a different payment and cannot be treated as interest.
Keep three records together: the tenancy, the amounts due and received, and documents supporting the expenses you intend to claim. Property tax, stamp duty on a tenancy and income tax on rent are different obligations. Use the current IRAS rules for the particular year, ownership and property before filing.
- Record rental amounts due and payable, even if receipt comes later.
- Separate mortgage interest from principal repayments.
- Compare eligible deemed expenses and documented actual deductions.
- Check the rules for vacancy, part-home rentals and jointly owned property.
- Retain supporting evidence and use the correct Year of Assessment.
Find the section you need
Jump to gross rent, the two expense methods, special situations, or the filing checklist.
What counts as gross rental income? · What to do with mortgage interest and other bills · Worked example of 15% versus actual expenses · Frequently asked questions about rental income tax
Chapters 1–3 · Rental income, expense methods and interest
Chapters 4–7 · Timing, calculation, records and FAQs
IRAS says rental income includes rent and related amounts connected with letting the property. Its examples include rent for premises and furniture and fittings and certain related payments. A forfeited rental deposit is generally part of gross rent under its guidance, with separate consideration of allowable costs incurred to repair damage. Check the exact facts before assuming every payment described as a deposit has the same treatment.
Use the date the rent is due
IRAS says rental income is taxable from the date it is due and payable rather than the date you actually receive it. If rent for December 2027 is due in 2027 and paid the following January, check the relevant 2027 income period and Year of Assessment under IRAS’s rules. Keep both dates on your rental ledger so you can reconcile the return with your bank records.
For an individual’s usual calendar-year basis, rental income due in 2027 generally falls into Year of Assessment 2028. Verify the relevant filing information and your circumstances. A ledger organised solely by bank credit date can move amounts into the wrong period if a tenant pays late or several months arrive together.
Check who must declare the rent
IRAS describes different reporting for sole and joint ownership. Check the applicable legal ownership and apportionment rather than assuming the person who receives the payment declares the whole amount. Keep the ownership records and the tenancy documents. If a transfer or other change occurred during the year, ask how the income and expenses should be attributed.
Record any adjustments separately. For example, if a payment includes rent and another amount connected with the letting, identify what the tenancy says and check its treatment. A separate line is easier to review than subtracting unrelated items from the rent before the annual calculation.
Keep a due-date ledger with a receipt column
Give each month a row. Enter the tenancy period, contractual due date, rent and any related amount that needs to be considered. Add the date and amount actually received. If a tenant pays two months together, allocate the payment to the amounts it covers and preserve the original bank record. If the property has more than one owner, check the legal shares and how to report each person’s amount. IRAS’s guidance says that which owner receives the rent does not change the ownership basis for reporting.
As a simple example, a landlord might receive January and February rent in one payment. The bank records one credit, while the tenancy and ledger show the amounts due for two periods. This distinction becomes especially important when the payment crosses a calendar year. Record what happened rather than making the cash receipt date stand in for the whole rental history.
For qualifying tenanted residential properties, IRAS offers a simplified claim based on 15% of gross rental income. Allowable mortgage interest on the loan taken to purchase the rented property may be claimed separately, with supporting records. The deemed amount stands in for the other qualifying expenses. Avoid adding the same actual maintenance, insurance or other expenses again when using it.
When actual expenses may be a better comparison
Under the actual method, check whether each expense is allowable and was incurred to produce the rental income under the applicable rules. IRAS lists examples and exclusions. Some costs of repairs, insurance, maintenance and property tax can qualify. An improvement or a private expense may be treated differently. Keep the invoices, dates, purpose and evidence that the amount relates to the rental.
The presence of an invoice does not establish deductibility. Review the nature of the work, whether the charge relates to the rented property and whether it covers a period or area that needs apportionment. If a charge includes more than one kind of work, ask for enough detail to identify the parts. Seek tax advice or IRAS clarification where the distinction is material.
Apply the chosen method consistently where required
IRAS says that a person with more than one tenanted residential property who uses actual expenses for one must apply that treatment to all their tenanted residential properties. Check whether the deemed method is available in your situation. IRAS lists exclusions, including cases where there are no deductible expenses apart from mortgage interest and certain partnership or trust situations. Do not choose one method per property without checking the rule.
Work out the two totals before selecting a method. If using actual expenses, check whether the records support the figures. If using the deemed method, still verify gross rent, eligibility and the interest claim. A pre-filled figure is a useful starting point that should be checked against your tenancy and ownership information.
Compare the two methods across more than one property
Suppose a landlord has two eligible tenanted residential properties. At the first, the deemed amount exceeds the other allowable actual expenses. At the second, the actual figure is higher. IRAS’s consistency rule means the landlord cannot combine the more favourable method from each property. Calculate the actual method across both, then compare it with the deemed method across the relevant properties if eligible. Keep allowable interest separate in both versions.
Give each number a source. The deemed calculation uses the verified gross rent, while the actual calculation uses documented allowable expenses. If a figure is missing or a property is treated differently under the rules, resolve that issue before selecting a method. The question is how the applicable treatment works across the landlord’s circumstances rather than which number looks better in a single row.
Save both calculations with the return. The comparison helps explain the decision and provides a starting point for the following year. Check the current rules again if a new property, ownership arrangement or tenancy type is added.
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Start with the lender’s record of interest for the relevant period. A regular mortgage instalment can include principal and interest. IRAS distinguishes allowable interest on the loan taken to buy the tenanted property from principal repayments. Use the interest figure supported by the bank’s statement and check the treatment where the loan or purpose changed.
Keep the tax calculation distinct from cash flow
A landlord may pay a monthly amount that includes principal. For household cash planning, include the full payment on its due date. For the rental income calculation, identify the part that qualifies under IRAS’s rules. A property can produce positive taxable net rent while requiring more cash than the owner expected, because some outgoings have different tax treatment. Both calculations are useful when kept separately.
If a mortgage was refinanced or funds were used for more than one purpose, confirm how the interest should be allocated. Keep the acquisition and loan records. An amount described as a financing expense can include fees or charges treated differently from interest. Check the actual descriptions and current rules before combining them.
Read property tax and maintenance expenses by period
The property tax bill is based on ownership and assessed Annual Value under separate rules. When preparing an actual-expenses claim, check the portion and period that IRAS allows for the rental. Apply the same care to maintenance and insurance. A bill paid during the year may cover dates or areas that do not all relate to the rental activity.
Ask whether a repair restores an item or improves or adds something. Keep a description of the work as well as the amount paid. Where the expense covers several jobs, request a breakdown. A well-kept record gives you enough information to apply the appropriate tax treatment and explain the calculation later.
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IRAS describes a specific treatment for certain expenses during vacancy periods between leases where reasonable efforts were made to find a new tenant, subject to its conditions. Keep evidence of the rental periods and relevant efforts to find a tenant. Do not assume that every vacant period, including a period of personal use or before a particular letting, receives the same treatment.
A room rental may need apportionment
If you rent out part of your home while living there, the rent can still be taxable. IRAS’s guidance includes an example of apportioning allowable expenses for a room rental. Check the method and applicable amounts for the actual arrangement. Keep the tenancy dates and the part of the property rented. Verify the applicable rental permission and property tax position separately.
For example, a household rents a room for several months and pays bills covering the whole flat. The owner cannot simply carry the entire set of outgoings into the rental expense calculation. Check the appropriate apportionment for the area or rooms and period under current IRAS guidance. Keep the calculation with the underlying bills.
Changes during the year deserve their own rows
A tenant may leave, a property may return to owner occupancy, or a new tenant may start after a gap. Record the dates and use of the property for each period. Note which expenses relate to each part of the year. If a bill arrives later, use the actual coverage or work period where the rules require it. Seek clarification about unusual cases before deciding what to include.
A similar distinction applies when costs span two properties. Give each address a separate record and identify shared expenses. Ask how to allocate a charge before treating it as fully deductible for one property. This keeps the result easy to check when the owner compares the methods across all relevant residential rentals.
Make a separate record for a vacancy between tenants
Mark the date the prior tenancy ended and the date the next began. Record efforts to find another tenant and any invoices or bills for the interval. Check which expenses IRAS allows and whether they meet the conditions for that vacancy. If the property was instead used privately for some of the time, keep that information visible. A gap in rent is a fact about the ledger. The use and efforts during the gap help determine how the related costs are treated.
If the claim includes a cost covering both rented and other periods, check the relevant allocation and keep the calculation. A single annual bill can require more than one row. This is easier to verify when you record the dates at the time rather than relying on the invoice payment date alone. Ask for clarification on a large or unusual expense before the return is filed.
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Assume gross residential rent of $36,000 for a full year, with $6,500 of allowable mortgage interest and $4,100 of other documented allowable expenses. The figures are invented. The actual method leaves $25,400 of net rental income. The deemed amount is $5,400, being 15% of $36,000. For a qualifying landlord using that method, subtracting it and the same allowable interest leaves $24,100.
What would reverse the choice?
If the other actual allowable expenses were $6,200 instead, the actual method would leave $23,300. Under the same deemed assumptions the figure would remain $24,100. The calculation changes because the actual non-interest expenses now exceed the deemed amount. Confirm what is allowable and whether the choice applies consistently across other tenanted residential properties.
The difference in net rental income is not the same as a cash tax saving of that amount. It changes the rental income that enters the applicable income tax calculation. The actual tax effect depends on the owner’s circumstances and current tax rules. Keep this distinction visible when comparing methods. The mortgage or maintenance bills also have the same cash amount under either reporting choice.
Check what the example leaves out
The illustration assumes the rent and expenses relate to the full year and uses a single property. A real household may need to account for late rent, an ownership change, a period between leases or a room rental. It may also need to decide which items count as related rental payments. Enter those facts first, then run the expense comparison.
Keep the year, address and sources with the figures. If the landlord updates an amount after receiving a statement, adjust the relevant row and rerun both methods. The worksheet should show which changed assumption produced the different result.
Test the comparison for a room rental
Suppose an owner rents out one of three bedrooms and continues to live in the home. Start with the rent and eligible expenses for the actual period. Review IRAS’s room-rental example and the treatment of allowable expenses, including the appropriate share of any eligible mortgage interest. Do not apply the whole property’s costs to the rented room. If the deemed option is available, use it under the relevant conditions and check how interest is apportioned.
Now consider a bill for replacing a fitting that serves the whole home. Check what the work involved, whether it qualifies and how the allowable amount should be allocated. Keep the supporting bill and the calculation. A room-rental worksheet is easiest to check when it shows which amounts relate only to the letting and which include a share of whole-home costs.
If the use changes during the year, put the transition on the same ledger. Ask about tax treatment as well as the permissions that apply to renting that space. Each question has its own requirements. Confirm the reporting method before carrying the same allocation forward to a later year.
| Item | Actual-expenses method | Deemed-expenses method if eligible |
|---|---|---|
| Gross rent | $36,000 | $36,000 |
| Allowable mortgage interest | $6,500 | $6,500 |
| Other deductions | $4,100 actual allowable expenses | $5,400 deemed expenses |
| Illustrative net rental income | $25,400 | $24,100 |
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Make a folder for the tenancy, rent ledger, ownership information, mortgage statements and relevant expenses. IRAS says to keep supporting documents for at least five years for actual-expense claims and to keep the evidence for mortgage interest where claimed under the deemed method. Check the applicable retention guidance and keep the documents accessible for any later verification.
Review the return against the ledger
Start with the period and address. Check that the rent due, related amounts and the ownership share are correct. Compare the expense method used with the actual information and any pre-filled figure. If more than one property is involved, check the consistency rule. Review the evidence for allowable mortgage interest and the dates that apply.
Keep the amount you report separate from the money you received into the bank during the same calendar year. Reconcile the difference if a tenant paid late, made a combined payment or if another person received the money for the owner. A short note beside the adjustment is enough if it makes the figures easy to understand.
Handle unclear expenses before filing
If an amount is large or unusual, ask IRAS or a qualified adviser how it should be treated. Bring the tenancy, invoice and an explanation of how it relates to the rental. A specific question can be answered more clearly than a broad request about whether repairs are deductible. Keep the response or source with the calculation.
If a later correction is needed, follow the current IRAS instructions. Save the version filed and the evidence used. This makes it easier to prepare the following year and to compare which items changed when the property or tenancy arrangement changed.
Check what the expense evidence actually says
An invoice that lists several jobs may include a repair and an improvement. Ask for a breakdown if it is necessary to establish which work the claim includes. Keep the contractor’s description with the payment record. If the work relates to an item supplied under a tenancy, retain the relevant context. A bare bank transfer is usually less informative than a dated invoice and a short note about the purpose.
Prepare the same way for mortgage interest. Keep a statement showing the relevant interest rather than relying on an estimate from total payments. Verify any allocation after a refinancing or a change in property use. A complete file helps you compare the expense methods and makes a later question easier to answer.
For co-owners, make sure the figures used by each person refer to the same tenancy and period. Check the legal ownership split and any special circumstances. A shared ledger is useful for reconciling the whole property before each owner checks the amount to report.
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Is rental income taxed in the year I receive the money?
IRAS uses when the rent is due and payable. Record the due and receipt dates, and confirm the relevant assessment period for your circumstances.
Can I deduct my full mortgage instalment?
IRAS distinguishes allowable interest on the qualifying loan from repayment of principal. Use the relevant lender records and verify the claim under the current rules.
Can I choose actual expenses for one rental and deemed expenses for another?
IRAS requires consistency across tenanted residential properties when actual expenses are claimed on one. Check eligibility for the deemed method and the treatment of any different property type.
Is my property tax bill the same as tax on rental income?
Property tax applies to ownership under the relevant AV and rate rules. Income tax on rent is assessed separately. Check the allowable expense treatment where it applies to a rental claim.
What should I verify before filing?
- Tenancy dates, amount due and relevant ownership share.
- Gross rent and related taxable amounts.
- Eligibility and consistency of the expense method.
- Mortgage interest and documents for any other deductions claimed.
- The assessment period and the figures in the return.
Use the current IRAS guide when the situation changes. A clear ledger makes it easier to check the filing and keeps ownership costs, rental income and tax calculations in the right places.
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