Should You Use a Guarantor or Cash-Out to Help Your Kids Buy?

Helping adult kids into the market usually comes down to two options: offer a parental guarantee over your home, or release equity as cash (a gift or loan) for their deposit and costs. Both can work. The better choice depends on your age, income, buffers, estate plan and how disciplined your kids are with money.

In this guide, we’ll compare guarantor structures and cash‑out equity release, highlight the main risks, and give you a one‑week plan to choose a path you can actually live with.

Two main ways to use home equity to help children buy: guarantee or cash-out.

1. The two main ways to use equity to help your kids

1.1 Parental guarantee (family pledge) – how it works

A parental guarantee (often called a family pledge) lets your child borrow up to 100% of the purchase price plus costs while avoiding or reducing LMI.

• Your property is used as additional security for part of their loan, usually up to 20% of the purchase price plus costs.
• You do not normally go on the title, but you are liable if your child can’t meet repayments and the property is sold at a loss.
• The guarantee can often be released once their loan balance falls below 80% of the property value.

1.2 Cash‑out / equity release – how it works

Cash‑out means you increase your own loan (or add a new split) and pass cash to your child as either:

• a gift (no repayment obligation), or
• a loan (with agreed terms), or
• part of a co‑ownership structure.

The bank assesses this as your borrowing. Your child then applies for their own home loan with a bigger deposit and no guarantee over your home.

For how much equity you can safely release, see /insights/how-much-equity-safely-release-home-australia.

2. Guarantor vs cash‑out: side‑by‑side comparison

2.1 Key differences at a glance

Both structures can be safe if:

1. Parents keep total LVR at a conservative level (often ≤70–80%).
2. There is a 3–6 month cash/offset buffer covering all loans and living costs (see /insights/how-much-equity-safely-release-home-australia).
3. The family documents whether support is a gift, loan, guarantee or co‑ownership, and how it is treated in the estate.

3. Worked example: what does this look like in numbers?

Say:

• Your home is worth $1,500,000 with an existing loan of $400,000 (LVR ≈ 26.7%).
• Your child wants to buy for $800,000 with $40,000 saved (5% deposit).

3.1 Option A: parental guarantee

• Your child borrows around $800,000 plus costs.
• The lender takes a limited guarantee over your home, say $200,000 (to get them to an 80% LVR on their purchase).
• If they repay on time, your cashflow doesn’t change.
• If they lose their job, fall behind, and the property is sold for $720,000, after selling costs the shortfall might be around $80,000–$100,000. The bank can pursue you under the guarantee.

3.2 Option B: cash‑out equity release

• You increase your own loan by $200,000.
• Your new total loan: $600,000 against a $1,500,000 property (LVR = 40%).
• You gift/loan the $200,000 to your child so they have a 30%+ deposit.

Indicative repayments (illustrative only, assuming 6% p.a., 25‑year P&I):

• Extra $200,000 to you ≈ $1,288/month.
• If your after‑tax household income is $12,000/month, that’s about 10.7% of income.

A simple stress test is to:

• model repayments at 2–3% higher than today’s rate, and
• check total housing repayments stay under about 30–35% of net income.

If those numbers feel tight, you’re likely over‑stretching.