Centrelink Granny Flat Rules: How a Granny Flat Interest Affects Your Pension

TL;DR: A Centrelink “granny flat interest” is not about building a granny flat — it is a legal arrangement where you pay money or transfer assets in exchange for the right to live in someone else’s home for life. If you pay more than the Reasonably Valued Amount (calculated using your age and the current pension rate), the excess is treated as a “gift” that can reduce your Age Pension for up to five years. Getting this wrong can cost pensioners tens of thousands of dollars.

Key takeaways

• A granny flat interest is a life accommodation arrangement, not a physical granny flat. It is triggered when you transfer money, property, or assets in exchange for the right to live somewhere for life.
• The Reasonably Valued Amount (RVA) is calculated as the combined annual partnered Age Pension rate multiplied by an age-based conversion factor. As of March 2026, the combined annual partnered rate is approximately $47,070.
• Pay above the RVA and the excess is treated as a gift — subject to Centrelink’s deprivation rules, which can reduce your pension for up to five years.
• The Extra Allowable Amount (EAA) is $258,000 (from 1 July 2025). This determines whether you are classified as a homeowner or non-homeowner for pension purposes.
• Always get financial and legal advice before entering a granny flat arrangement. Mistakes are extremely difficult to reverse.

What is a Centrelink “granny flat interest”?

Despite the name, a Centrelink granny flat interest has nothing to do with building a secondary dwelling in someone’s backyard (although it can include that scenario). According to Services Australia, a granny flat interest is created when you:

• Transfer the title of your home to another person (such as your child) in exchange for the right to live there for life
• Pay for the construction of a dwelling on someone else’s property in return for a life interest
• Purchase a property in someone else’s name in exchange for a right to occupy it
• Transfer cash or other assets in exchange for a guarantee of accommodation for life

The key element is the exchange of assets for a lifetime right to accommodation. This comes up regularly in Australian families where an elderly parent moves in with adult children and contributes financially to the household.

What does not count as a granny flat interest

• Renting a granny flat from someone (a standard landlord-tenant arrangement)
• Building a granny flat on your own property as an investment
• Living in your own home that happens to have a granny flat attached
• Paying market rent to a family member without a life interest agreement

How Centrelink assesses a granny flat interest

When you create a granny flat interest, Centrelink needs to determine two things:

1. What is the value of the granny flat interest? (This affects the assets test)
2. Did you pay a reasonable amount? (If you overpaid, the excess is treated as deprivation)

Step 1: Determining the value

In most straightforward cases, the value of the granny flat interest equals the amount you paid. For example, if you paid $200,000 to build a unit on your child’s property in exchange for a life interest, the value is $200,000.

However, Centrelink applies a reasonableness test when:

• You transfer assets in addition to the granny flat arrangement (e.g., you build the flat and give $100,000 cash)
• The value of the granny flat interest is indeterminate (e.g., you transfer your home but there is no independent valuation)
• You enter into multiple granny flat arrangements

Step 2: The reasonableness test

The reasonableness test calculates the maximum amount Centrelink considers “reasonable” for a granny flat interest based on your life expectancy and the current pension rate.

Formula:

Reasonably Valued Amount = Combined Annual Partnered Age Pension Rate x Age-Based Conversion Factor

A few important details:

• The combined annual partnered pension rate is used regardless of whether you are single or partnered. As of March 2026, this rate is approximately $47,070.40 per year.
• The conversion factor is based on your age at next birthday (or the younger partner’s age for couples). It comes from Australian Life Tables and is published in the Social Security Guide (section 4.6.4.60).

Conversion factor examples

Note: Conversion factors are based on Australian Life Tables 2010-2012. The pension rate changes with indexation (March and September each year), so the RVA shifts accordingly. Always confirm the current rate with Services Australia or a financial adviser.

What happens if you pay above the RVA

If the amount you pay exceeds the Reasonably Valued Amount, the excess is treated as a deprived asset (a “gift”). Centrelink’s deprivation rules mean:

• The excess amount is counted as an asset for five years from the date of the arrangement
• It is also deemed to earn income under the income test for those five years
• This can reduce or eliminate your Age Pension even though you no longer have the money

Example: Margaret, aged 74, pays her daughter $800,000 to build a granny flat and live there for life. The construction costs $180,000. Since she paid more than the construction cost, the reasonableness test applies. With a conversion factor of approximately 15.0 and a pension rate of $47,070, the RVA is roughly $706,000. The excess of $94,000 ($800,000 minus $706,000) is treated as a gift and assessed under deprivation rules for five years.

Homeowner vs non-homeowner status

Your homeowner status under a granny flat arrangement affects which assets test threshold applies to you — and the difference is significant.

The Extra Allowable Amount (EAA)

The EAA is the difference between the homeowner and non-homeowner lower assets test thresholds. From 1 July 2025, the EAA is $258,000.

How it works:

• If your entry contribution (the amount you paid) is greater than $258,000, you are treated as a homeowner. Your entry contribution is exempt from the assets test. The homeowner assets test threshold applies.
• If your entry contribution is $258,000 or less, you are treated as a non-homeowner. Your entry contribution is counted as an asset. However, the higher non-homeowner threshold applies, partially offsetting this.

Example: John, aged 72, pays his son $300,000 for a granny flat interest. Since $300,000 exceeds the EAA of $258,000, John is classified as a homeowner. The $300,000 is not counted in his assets test, and the homeowner threshold applies.

Example: Susan, aged 78, pays $200,000 for a granny flat interest. Since $200,000 is below the EAA, Susan is classified as a non-homeowner. The $200,000 is counted as an asset, but she benefits from the higher non-homeowner threshold ($504,500 for singles vs $314,000 for homeowners, as of 2025-26).

The EAA is locked at arrangement date

Your homeowner status is determined using the EAA that applied on the date your granny flat arrangement was established, not the current EAA. This means historical thresholds matter if you set up your arrangement years ago.

Impact on the assets test and income test

Assets test

• Homeowner (entry contribution > EAA): Entry contribution is exempt. Other assets are tested against the homeowner thresholds.
• Non-homeowner (entry contribution ≤ EAA): Entry contribution is an assessable asset. Other assets are tested against the non-homeowner thresholds.
• Deprived amount (if applicable): Any amount above the RVA is assessed as a deprived asset for five years.

Income test

The granny flat interest itself does not generate income and is not subject to deeming. However:

• Any deprived amount is deemed to earn income at the standard deeming rates for five years
• Other financial assets you hold are still subject to deeming

Common granny flat arrangement scenarios

Scenario 1: Parent transfers home to child, continues living there

This is the most common arrangement. The parent transfers the title of their home (worth, say, $700,000) to their child in exchange for the right to live there for life. If no additional assets are transferred, the value of the granny flat interest equals the home’s value, and the reasonableness test generally does not apply. The parent is treated as a homeowner (since $700,000 > EAA), and the $700,000 is exempt from the assets test.

Scenario 2: Parent pays for construction on child’s property

A parent pays $180,000 to build a self-contained unit in their child’s backyard. The value of the granny flat interest is $180,000 (the construction cost). Since $180,000 < EAA ($258,000), the parent is a non-homeowner, and the $180,000 is an assessable asset.

Scenario 3: Parent transfers home and extra cash

A parent transfers their home (worth $500,000) plus $200,000 in cash. Total transfer: $700,000. Because additional assets were transferred beyond the home, the reasonableness test applies. If the RVA is $650,000, then $50,000 is treated as deprived.

How to report a granny flat interest to Centrelink

1. Contact Centrelink’s Financial Information Service (FIS) on 132 300 before finalising the arrangement. They can model the impact on your pension.
2. Notify Services Australia within 14 days of creating the arrangement. You can do this online via myGov, by phone, or in person.
3. Provide documentation including the written agreement, valuation of any property transferred, evidence of construction costs, and legal advice received.
4. Keep records of all payments, legal agreements, and valuations. You may need them if your arrangement is reviewed.

Common mistakes to avoid

1. Not getting a written agreement

A verbal arrangement is difficult to prove and can lead to disputes — both with Centrelink and within your family. Always have a solicitor prepare a formal granny flat agreement.

2. Paying too much without realising

If you transfer your $900,000 home plus $100,000 cash to your child, the total of $1,000,000 may exceed the RVA for your age, and the excess will reduce your pension for five years.

3. Confusing a granny flat interest with renting

If you simply pay rent to live with your child, that is not a granny flat interest. The key difference is the life interest component. Rent does not create a granny flat interest.

4. Ignoring the impact on aged care later

If you later need to enter residential aged care, the granny flat interest can affect your means-tested care fee and accommodation costs. The arrangement that protected your pension may create problems for aged care fees.

5. Assuming the rules apply to physical granny flats

Many people searching for “granny flat rules Centrelink” are actually building a secondary dwelling. Centrelink’s granny flat interest rules only apply if there is a transfer of assets for a lifetime right to accommodation. If you are building a granny flat on your own property as an investment, these rules do not apply — but rental income will affect your pension through the income test.

Granny flat interest vs building a granny flat

If you are planning to build a granny flat rather than enter a Centrelink granny flat arrangement, use our granny flat cost calculator to estimate your total build cost including approvals, site preparation, and construction.

When to get professional advice

A granny flat interest is one of the most complex areas of social security law. You should consult:

• A financial adviser who specialises in Centrelink and aged care planning (look for advisers with aged care accreditation)
• A solicitor to prepare the granny flat agreement and ensure it meets Centrelink’s requirements
• Centrelink’s Financial Information Service (FIS) on 132 300 — this is a free service that can model the impact on your pension before you commit

Key resources

• Services Australia — Granny flat interest
• Services Australia — How we assess granny flat interests
• Social Security Guide 4.6.4.50 — Granny flats: features, rights & interests
• Social Security Guide 4.6.4.60 — Granny flats: reasonable value conversion factors
• Services Australia — Examples of granny flat interests

Disclaimer: This guide is for general information only and does not constitute financial or legal advice. Centrelink rules change with pension indexation (March and September each year). Always confirm current rates and thresholds with Services Australia or a qualified adviser before making decisions.