Common Deposit Mistakes Wales Landlords Make and How to Avoid Them

A contract-holder files a county court claim. The judge finds you protected the deposit four days late. The penalty is between one and three times the deposit amount, and if you missed the 30-day requirements you cannot serve a valid section 173 notice until you repay the deposit (or the net balance after agreed deductions) to the contract-holder.

That outcome plays out regularly in Welsh county courts, and the mistake behind it is almost always preventable. Here are the deposit protection errors that trip up Welsh landlords most often, what the law actually requires, and how to stay on the right side of each rule.

Missing the 30-Day Deadline

Section 45(2) of the Renting Homes (Wales) Act 2016 gives you 30 calendar days from the day you receive the deposit to complete two things: satisfy the initial requirements of an authorised scheme and give the required information to the contract-holder.

The clock starts on the day the money arrives — not when it clears, not when a letting agent forwards it to you, and not when you get around to registering. If the agent receives the deposit on 3 March, Day 1 is 3 March regardless of when the funds reach your own account.

Day 30 is Day 30 even if it falls on a weekend or bank holiday. Civil procedure extensions for working days do not apply to this statutory deadline.

The fix is mechanical. Set a calendar reminder the day the deposit hits any account in the chain (yours or your agent's), register with DPS, MyDeposits or TDS within the first week, and serve the required information by recorded delivery or with a countersigned receipt well inside the deadline.

Protecting the Deposit but Not Serving the Required Information

Registering the deposit with a scheme is half the obligation. The other half is giving the contract-holder a written document containing the information prescribed by the Renting Homes (Deposit Schemes) (Required Information) (Wales) Regulations 2022 (S.I. 2022/250).

The required information includes the scheme administrator's details and leaflet, the deposit amount and property address, the contract's deduction terms, contact details for the parties and any third-party payer, and the repayment and dispute-resolution procedures. The landlord must also certify that the information is accurate and give the contract-holder an opportunity to sign. It must be served on both the contract-holder and any third party who paid the deposit on their behalf.

Missing this step is arguably more dangerous than late registration, because scheme records will show the deposit was lodged — so the landlord assumes they are compliant — but they do not by themselves prove that the required information was served. In a penalty claim, the landlord needs a clear record showing the information was given within 30 days. Without a signed receipt or tracked delivery record, that is hard to prove.

Applying the English Five-Week Deposit Cap to Wales

There is no statutory cap on security deposits in Wales. The English Tenant Fees Act 2019 caps deposits at five weeks' rent (or six weeks where annual rent is £50,000 or more), but that Act has no territorial application in Wales.

The Renting Homes (Fees etc.) (Wales) Act 2019 contains an enabling power (Schedule 1, paragraph 2(2)) for Welsh Ministers to introduce a cap by regulations, but they have never exercised it. A Welsh landlord can lawfully agree any deposit amount with the contract-holder, provided the full sum is protected within the 30-day window.

The reverse mistake also happens: a landlord with properties in both countries applies the uncapped Welsh rule to an English let and takes a deposit above the English cap. That is a prohibited payment in England and carries its own enforcement consequences.

Forgetting to Re-Serve Required Information After a Contract Change

When a contract-holder is added or removed, when the contract converts from a fixed-term to a periodic standard occupation contract, or when a deposit top-up is paid, the required information must be re-served within 30 days of the change or receipt of the top-up. A top-up's 30-day clock starts when that money is received.

The most common trigger is a joint contract where one occupant leaves and a replacement signs a deed of variation. The landlord re-protects (or confirms the existing protection still stands), but never re-issues the required information to the new contract-holder. That new occupant now has standing to bring a penalty claim.

Demanding a Holding Deposit Above One Week's Rent

Wales caps holding deposits at one week's rent under Schedule 1, paragraph 4(c) of the 2019 Act. Any amount above that is a prohibited payment, and the local housing authority can issue a fixed penalty notice of up to £1,000.

The holding deposit is not the same as the security deposit, and the rules are different. A landlord who asks for "two weeks' deposit up front to hold the property" has demanded one lawful week of holding deposit plus one prohibited week.

If the applicant proceeds and the holding deposit is converted into part of the security deposit, the 30-day clock for deposit protection starts from the day the holding deposit is formally allocated — not from the day the occupation contract is signed.

Treating a Local Authority Bond as a Cash Deposit (or Vice Versa)

If a local authority issues a guarantee bond — a written promise to cover damage up to a specified sum without handing over money — Section 45 deposit protection duties do not apply, because no monetary deposit was paid.

But if the local authority, a charity, or any third party transfers actual cash to the landlord on behalf of the contract-holder, that payment is a security deposit under Section 45. The landlord must protect the cash in an authorised scheme within 30 days and serve the required information on both the contract-holder and the third-party payer.

Landlords who participate in council leasing schemes or homelessness prevention programmes in Cardiff, Swansea, Newport, or Powys should check whether they are receiving a paper bond or a cash transfer, because the compliance obligations are entirely different.

Relying on an Unprotected Deposit When Serving a Section 173 Notice

A section 173 notice — the Welsh equivalent of what was once a section 21 notice — cannot be served validly if the deposit is not protected in an authorised scheme, the scheme's initial requirements were not met within 30 days, or the required information was not given. Under section 177, the landlord must repay the deposit (or the net balance after agreed deductions) to the contract-holder before serving a valid notice. A possession claim based on an invalid notice cannot succeed.

Some landlords protect the deposit late, then serve a section 173 notice the same week, assuming the late protection "cured" the breach. It does not erase the historical breach. The county court can still award the 1x–3x penalty for the initial non-compliance, and the deposit must be repaid as described above before the landlord can serve a valid section 173 notice.

The only safe sequence: protect the deposit and serve the required information within 30 days, confirm both are in order, and only then issue a section 173 notice when the statutory grounds and notice periods are met.

Entering ADR Without an Inventory or Evidence

At the end of the contract, if there is a dispute over deductions, either party can refer the matter to the deposit scheme's alternative dispute resolution service. The adjudicator decides based on the evidence submitted — and landlords lose more disputes than they win when they have no contemporaneous inventory.

A check-in inventory with dated photographs taken at the start of the contract, a check-out report comparing the same items, and receipts or quotes for the claimed damage are the minimum. Without them, the landlord may struggle to substantiate the claimed deductions.

A signed schedule of condition, completed and countersigned within the first week of the occupation contract, is the single most effective document a landlord can hold in a deduction dispute.

One Compliance System Prevents All of Them

Every mistake on this list comes down to either a missed deadline, a missing document, or a misunderstood rule. A deposit compliance checklist and timeline that walks through each obligation in order — protection, required information, proof of service, contract variations, and end-of-contract returns — keeps the sequence visible and auditable from the day the deposit arrives until the day it is returned.

See more Wales guides →