What direct debit does and doesn't do with O2 arrears
Direct debit is an instruction you give your bank to let O2 take money from your account on a set date each month. It does not erase money you already owe — it only pays what comes due going forward. If you have an overdue balance with O2, setting up direct debit will not clear that arrears automatically. You have to handle the overdue amount separately, either by paying it in full upfront or by arranging a payment plan with O2 directly.
The confusion happens because direct debit feels like a fresh start. It is not. It is a way to prevent future missed payments. O2 will continue to chase the old debt while your direct debit covers new charges, unless you contact them and work out what to do about the arrears.
Key Takeaways
- Direct debit pays only your monthly bill going forward, not money you already owe O2.
- An overdue balance stays on your account until you pay it or agree a plan with O2 to clear it over time.
- You must contact O2 separately to discuss your arrears — setting up direct debit does not trigger an automatic conversation about old debt.
- O2 may suspend your service or pass your debt to a collection agency if the overdue amount is not addressed, even if direct debit is active.
How O2 treats arrears when you set up direct debit
When you arrange direct debit with O2, the system records it as a new payment method. O2's billing system does not automatically assume you want to pay off the old debt through that method. The direct debit instruction covers future monthly charges only — it does not redirect toward clearing what you owe from previous months.
This matters because O2 tracks current charges and arrears separately on your account. Your direct debit will pay the current month's bill, but the overdue amount sits in a different part of your account record. If you do not tell O2 what you want to do about it, they will keep sending reminders and may escalate the debt.
What you need to do about the overdue balance
Contact O2 directly — by phone, online chat, or through your online account — and tell them you have set up direct debit and want to sort out the arrears. O2 customer service can offer you two main routes: pay the full overdue amount in one go, or set up a separate arrangement to pay it off in instalments alongside your direct debit payments.
If you pay the arrears in full, O2 will clear that balance from your account when ready. If you cannot afford the lump sum, ask about a payment arrangement. O2 will agree to let you pay a fixed amount each month in addition to your direct debit, spreading the old debt over a set number of months. This arrangement is recorded on your account, and O2 will not escalate the debt as long as you stick to it.
Do not assume that because direct debit is active, O2 knows you are dealing with the arrears. You have to tell them explicitly what you want to do.
When O2 might suspend your service despite direct debit
O2 can suspend your phone or broadband service if your overdue balance reaches a certain threshold, even if direct debit is set up and working. The direct debit covers new charges, but it does not protect you from suspension related to old debt. Suspension usually happens after several months of arrears and repeated contact attempts from O2.
If your service is suspended, direct debit will still try to take payment for your new monthly bill — but you will not be able to use the service. To get reconnected, you will need to pay the overdue balance or agree a payment plan with O2. Once that is sorted, they will restore your service, usually within 24 hours.
How to check what O2 says you owe
Log into your O2 online account or call O2 customer service on 202 (from an O2 phone) or 0344 809 0202 (from any phone). Your account will show your current balance, any arrears, and whether direct debit is active. If you see an overdue amount listed separately from your current charges, that is the arrears you need to address.
Ask O2 to confirm the exact amount owed, the date it became overdue, and what payment options they can offer. Write down the name of the person you speak to and the date of the call — if you later agree a payment plan, you will want a record of that conversation.
Setting up direct debit to prevent future arrears
Direct debit is the most reliable way to avoid falling behind on O2 bills in future. Once it is set up, the payment happens automatically on the date your bill is due, so you do not have to remember to pay manually. O2 will not charge you extra for using direct debit, and it usually takes three to five working days to set up.
You can set up direct debit through your O2 online account, by calling customer service, or in an O2 store. You will need your bank details and your O2 account number. Once it is active, O2 will send you a confirmation, and the first payment will go out on your next bill date.
What happens if you cannot pay the arrears right now
If you genuinely cannot pay the overdue balance in full, tell O2 that when you contact them. They would rather agree a payment plan with you than pass the debt to a collection agency. O2 can spread the arrears over three, six, or twelve months depending on the amount and your circumstances. Each month you will pay the arrangement amount plus your regular direct debit payment.
If your situation changes and you cannot keep up with the arrangement, contact O2 again before you miss a payment. They may be able to adjust the plan. If you ignore the arrangement and stop paying, O2 will treat it as a broken agreement and may escalate the debt or suspend your service.
Frequently Asked Questions
Does setting up direct debit stop O2 from chasing my old debt?
No. Direct debit only covers future bills. O2 will continue to pursue the overdue balance unless you contact them and arrange to pay it. You must speak to O2 separately about the arrears.
Can O2 take the arrears from my direct debit payment?
No. Direct debit is set up to take a fixed amount each month for your current bill. O2 cannot redirect that payment toward arrears without your permission. You have to agree a separate arrangement with them.
What if I set up direct debit but still miss a payment?
If your bank account does not have enough money on the due date, the direct debit will fail. O2 will charge you a failed payment fee and send you a reminder. You will then owe the original bill plus the fee. Set up direct debit only if you know you can cover the payment each month.
Will paying off the arrears improve my credit score?
Paying the arrears will stop O2 from reporting further missed payments, but the record of the overdue debt may stay on your credit file for up to six years. Clearing it does help, but it does not erase the history when ready.
Can I pay the arrears through direct debit instead of a lump sum?
Yes. When you contact O2, ask them to set up a payment arrangement for the arrears. This is separate from your direct debit for current charges. O2 will take both payments from your account each month until the arrears are cleared.