Overdraft Calculator

Use our overdraft calculator to estimate the cost of using an overdraft facility on your current account. The figures provided by this calculator are intended to be used as a guide only and are based on assumptions rather than precise calculations. Your actual costs may vary if your level of borrowing changes within the month and/or you have incurred interest and charges in previous month.

Step 2 - select your overdraft preferences

How much do you want to borrow?

An overdraft is an agreed borrowing limit which you arrange with us in advance. You can find out your current Arranged Overdraft limit using Internet Banking or on your TSB current account statement.
£0 £5000

For how many days?

1 31

Calculate Unarranged Overdraft?

If you try to make a payment from your account and you don’t have enough money, we will treat this as a request for an Unarranged Overdraft. If we agree to give you an Unarranged Overdraft, fees and interest will apply.

To ensure a better estimate, the above arranged selections are assumed to be the maximum arranged limit on your account.

How much do you want to borrow?

£0 £500

For how many days?

1 31

Have a current account with us?
Apply for an overdraft today

Full details of our fees and charges can be found in our Banking Charges Guide.
Banking Charges Guide (PDF)

How much does my overdraft cost in pounds and pence?

For Spend & Save Accounts.

As an example, if you borrow £500 it will cost you:

7 days

30 days

60 days




For Spend & Save Plus accounts.

You do not pay interest on the first £100 you borrow. As an example, if you borrow £500, you will pay interest on £400 and it will cost you:

7 days

30 days

60 days




We’ll never charge you more than £30 each monthly billing period for the total of all these charges/fees:

  • Unarranged Overdraft interest
  • Returned Item Fees


Monthly cap on unarranged overdraft charges

  1. Each current account will set a monthly maximum charge for: 
     a) Going overdrawn when you have not arranged an overdraft. 
     b) Going over/past your arranged overdraft limit (if you have one).
  2. This cap covers:
     a) Interest for going over/past your arranged overdraft limit.
     b) Fees for each payment your bank allows despite lack of funds.
     c) Fees for each payment your bank refuses due to lack of funds

Terms and conditions

For more information about arranged and unarranged overdraft interest and other banking fees, please see our Banking Charges Guide (PDF)

How the calculator works

  • The Total Monthly Cost is for illustrative purposes only and based on the information you have provided. It only includes overdraft interest, other account fees, such as Returned Item Fees, may apply.

  • This tool is only suitable for calculating an estimate of cost for Arranged Overdraft borrowing of up to £5,000 and Unarranged Overdraft borrowing of up to £500.

  • The overdraft calculator will assume that the amount selected will be used within the same monthly billing cycle. If the amount selected will be used over more than one billing cycle further interest will apply

  • When calculating the cost related to any Unarranged Overdraft please enter your maximum overdraft limit and the number of days you will be at this limit. Unarranged Overdrafts begin once you have used all your available Overdraft limit. If you do not have an Overdraft limit, or simply want to calculate Unarranged Overdraft charges by themselves, please enter £0 in the Arranged Overdraft part of this calculator.

  • How much we lend you (if any) is subject to application and approval.

  • Interest rates are correct as at 16/03/2020. Interest rates are variable