The traditional model of renting in the UK requires a cash deposit of up to five weeks' rent before you move in. At the average UK rent of £1,383/month, that's £1,596 locked away in a protection scheme for the duration of your tenancy. In London at £2,294/month, it's £2,647.
A growing number of fintech products aim to reduce or eliminate that upfront cost. They go by different names: deposit alternatives, deposit replacement, zero-deposit products, deposit insurance. But they work in very different ways, and not all of them save you money in the long run.
How traditional deposits work (the baseline)
Under the Tenant Fees Act 2019, your landlord can charge up to five weeks' rent as a tenancy deposit. This money must be registered in a government-approved scheme (DPS, MyDeposits, or TDS) within 30 days. At the end of your tenancy, you get the full amount back minus any legitimate deductions for damage or unpaid rent. The deposit is your money, held in trust.
The main types of deposit alternative
These products fall into three broad categories, and the differences matter.
1. Deposit replacement guarantee
Products like Reposit and Zero Deposit replace the cash deposit with a guarantee. You pay a non-refundable fee, and the provider guarantees the landlord's deposit protection. If there's damage at the end of the tenancy, the provider pays the landlord and then comes to you for the money.
| Product | Upfront cost | Ongoing cost | Landlord protection |
|---|---|---|---|
| Reposit | 1 week's rent | None | Up to 8 weeks' rent cover |
| Zero Deposit | 1 week's rent + £59.99 setup | £17.50/year | Deposit-replacement guarantee |
| flatfair No Deposit | 28% of 1 month's rent + VAT (min £120, split across household) | None | Up to 10 weeks' rent cover |
The key difference from a cash deposit
With a cash deposit, you get your money back at the end if there's no damage. With a deposit replacement, the fee is non-refundable. If you stay for two years with no issues, a cash deposit returns your £1,596. A deposit replacement costs you that fee permanently. The savings are upfront, not total.
2. Deposit share (partial coverage)
Deposit Share works differently. Instead of replacing the deposit entirely, it covers a portion of it, up to 85%, on day one. The landlord still receives the full deposit amount, protected in a government scheme as normal. You pay a smaller fee rather than the full lump sum.
This model preserves the legal protections of the traditional deposit system for both tenant and landlord, while reducing the upfront barrier for the tenant. The landlord's position is identical to a standard cash deposit tenancy.
3. Rent-reporting and credit-building tools
Products like CreditLadder report your rent payments to credit reference agencies (Experian, Equifax, TransUnion). This doesn't replace a deposit, but it builds your credit history through payments you're already making. Over time, a stronger credit profile can make future referencing easier and bring mortgage readiness closer.
CreditLadder is listed by Open Banking as a regulated provider and links to FCA registration. It's worth considering alongside deposit products, not instead of them.
Cost comparison: what you actually pay over 12 months
At an average UK rent of £1,383/month (five-week deposit = £1,596):
| Option | Upfront cost | Returned at end? | 12-month net cost |
|---|---|---|---|
| Cash deposit | £1,596 | Yes (if no damage) | £0 (money is returned) |
| Reposit | ~£319 (1 week) | No | £319 |
| Zero Deposit | ~£319 + £60 setup | No | £379 + £17.50/year ongoing |
| flatfair | ~£387 + VAT per household | No | ~£465 |
| Deposit Share (85% covered) | Smaller fee + 15% of deposit | 15% portion returned | Fee only (varies by tenancy) |
What to check before you sign up
- Does your landlord accept this product? Not all landlords or agents accept deposit alternatives. Confirm before you pay any fee.
- Is the fee refundable? With most deposit replacements, the answer is no. Know this before you commit.
- What happens at the end of the tenancy? With a cash deposit, the dispute goes through the deposit scheme's free ADR process. With a replacement product, check what dispute resolution is available.
- Are you still liable for damage? Yes, in every case. The product protects the landlord, not you. If there's damage, the provider pays the landlord and then recovers from you.
- Is the provider FCA-regulated? Check the FCA register. Some products are insurance-based and regulated, others are contractual arrangements that sit outside standard financial regulation.
When a deposit alternative makes sense
- You need to move quickly and don't have £1,500 or more ready in cash
- Your previous deposit hasn't been returned yet and you need to bridge the gap
- You're confident the tenancy will end cleanly with no deductions
- You understand the fee is non-refundable and have factored that into your budget
When a cash deposit is better
- You have the money available and don't need to free up cash for other expenses
- You plan to stay for more than 12 months (the longer you stay, the worse the net cost of a non-refundable fee)
- You want the simplest possible legal position at the end of the tenancy
The deposit alternative market is growing because the upfront cost of renting is a genuine barrier. Government guidance under the amended Tenant Fees Act confirms that tenants may use a loan, insurance, or contract product if they choose. But the choice should be informed, not automatic. Know what you're paying, what you get back, and what happens if something goes wrong.