Portable bonds seems good on paper, but…
Portable rental bonds fix the cash-flow crunch of moving house — but what happens to the landlord's side of the equation when the guarantee goes murky?
The push for portable rental bonds has good politics behind it. Nobody enjoys paying two bonds at once when they move house, bridging the gap between a new landlord's upfront demand and the slow return of the old one. ACT Greens housing spokesperson Rebecca Vassarotti made that case this week, pointing to data showing Canberrans earning $70,000 a year are already spending more than half their income on rent. The double-bond problem is real. The question worth asking is whether the fix creates a different problem through the back door.
A bond is not just a deposit — it is a signal
The core mechanic of a portable bond scheme is that when a tenant moves, the bond follows them rather than sitting in a government account while the landlord inspects for damage and the claim process grinds through. Victoria and New South Wales have both introduced versions of this. On its face, it is a sensible piece of administrative plumbing. The friction of double bonding is not theoretical. People do end up on credit cards and short-term loans to cover the gap. That is a real cost, falling on people who can least carry it.
But plumbing changes the pressure in the whole system, not just the pipe you fix.
Think about what a bond actually does. It is not just a deposit — it is a signal. It tells a landlord, before anything has gone wrong, that the tenant has something to lose and that the landlord has immediate access to compensation if something does go wrong. A bond sitting in a government account can be claimed against, quickly, in the event of damage or unpaid rent. A bond that is mid-transfer, or that carries the administrative overhead of portability rules and dispute sequencing from a prior tenancy, is a murkier guarantee.
A scheme that optimises for one while ignoring the other will leave renters with better cashflow and higher rent, which is not obviously an improvement.
In a tight market, landlords price for risk
The landlord's response to murkier guarantees is not to absorb the additional risk out of goodwill. It is to price for it. In a competitive rental market with vacancy to spare, that pricing mechanism is weak — landlords compete on terms to attract tenants and cannot easily pass costs on. In a market like Canberra's, where the 2026 Everybody's Home data suggests severe affordability pressure and limited vacancy, the pricing mechanism is strong. Landlords set the rent. If the security of tenure attached to a bond weakens, the compensation shows up in a higher weekly figure.
This is not a hypothetical. It is the same structural pattern that emerges whenever rental regulation adds friction or uncertainty to the landlord side of a transaction. We covered the mechanism in detail in the context of rent control — policies designed to benefit renters routinely produce compensating behaviour from landlords that erodes those benefits, particularly in supply-constrained markets. The form changes. The dynamic does not.
The design details are the policy
The design details matter enormously. A well-structured scheme — one where the outgoing bond is settled before or concurrent with the transfer, where landlords have clear, fast claims pathways, and where the government backstops any gap — preserves the security signal without adding meaningful risk. Several of the existing state implementations attempt this. Whether they succeed depends on how fast the dispute resolution actually runs in practice, not in the policy document.
The version Vassarotti is advocating for has not yet been designed in detail, so it is not possible to evaluate it against that standard. What is possible is to note that the argument being made — move bonds are a cashflow problem, portable bonds fix cashflow — is only half the analysis. It treats the bond as a renter's asset without fully accounting for its function as a landlord's guarantee. A scheme that genuinely holds both truths at once can work. A scheme that optimises for one while ignoring the other will leave renters with better cashflow and higher rent, which is not obviously an improvement.
The affordability crisis in Canberra is genuine. But serious problems deserve honest analysis of the tools proposed to fix them. Portable bonds can be part of a sensible answer. The work is in the design, not the announcement.
Sources
The Bearing — Why rent control keeps failing the renters it's meant to help
The Bearing — Rent caps save renters money if you ignore all flow-on effects
Frequently Asked Questions
What is a portable rental bond scheme?
A portable bond scheme lets a tenant transfer their existing bond directly to a new rental property rather than paying a fresh bond upfront while waiting for the old one to be returned. The aim is to eliminate the cash-flow squeeze of covering two bonds at once during a move.
Why would portable bonds lead to higher rents?
A bond in transit or subject to portability rules is a less certain guarantee for a landlord than cash held in a government account. In a supply-constrained market like Canberra's, landlords facing greater risk price it into rent — so renters gain on the bond and lose on the weekly figure.
Do portable bond schemes already exist in Australia?
Yes. Victoria and New South Wales have both introduced versions of portable bond schemes. Whether they successfully preserve the landlord's security guarantee depends on how quickly dispute resolution actually operates, not just what the policy documents specify.
What makes a portable bond scheme work well rather than badly?
A well-designed scheme settles the outgoing bond before or at the same time as the transfer, gives landlords clear and fast claims pathways, and has the government backstop any timing gap. Schemes that skip these steps weaken the bond's function as a landlord guarantee and create pressure on rents.
Is the double-bond problem serious enough to justify reform?
The cash-flow problem is real — renters sometimes take on credit card debt to cover two bonds simultaneously, a cost that falls hardest on lower-income tenants. The question is not whether the problem is worth solving but whether portable bonds as designed actually solve it without creating offsetting costs elsewhere.