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Overdraft calculator

See how much it costs to use an overdraft across our range of accounts. 

Please note that this tool does not provide any indication of approval. If you were looking to apply or make changes to an existing overdraft, please instead visit our eligibility tool. 

Select your account type, let us know how much of the overdraft you want to use and for how long. 

Choose your account

How has it been since you've graduated?

Are you in the first term of your first year?

Which overdraft option applies to you?

What is your overdraft limit?

Please enter the amount
Please enter days.

Is this amount over your arranged limit?

Please enter the amount.

When will you pay for your usage?

  • You’ll be charged interest 21 days after your statement date.
  • Please note: the charge might be higher if you use your overdraft over two charging periods i.e. two months. See examples of this on the current accounts’ terms, rates and charges page.

About unarranged overdrafts

About unarranged overdrafts

  • Going over your arranged overdraft or going overdrawn without an overdraft in place means that you’ve been using an unarranged overdraft. 
  • You'll incur additional changes on the unarranged overdraft balance used.
  • You could be charged a £1.55 unpaid transaction fee if payment by Direct Debit fails.
  • The monthly cap on unarranged overdraft charges for our standard adult current accounts is £18.80. This includes an unpaid transaction fee if applicable. 

Got a question?

Head to our Support Centre if you have any overdraft questions.

These results are for illustrative purposes only. We will only charge you interest when you use your Overdraft.
Overdraft usage costs

In total a £1,000 arranged overdraft for 20 days could cost you.

£18.49 in interest

39.49% EAR

Representative example
Effective Annual Rate

39.49% (variable)

Representative APR

39.49% (variable)

Assumed credit limit

£1,200

How does our overdraft compare?

We give a Representative APR so it’s easier for you to compare the costs of using an arranged overdraft with different credit products (such as a loan or credit card).

As you have a Tailored Account, we might have agreed that you pay interest on an arranged and unarranged overdraft at a different to what we’ve used in this example. The above shows the maximum cost that most of our customers with a Tailored account would pay.

Available to eligible NatWest customers, UK residents aged 18 or over who want to apply for an overdraft or increase/decrease an existing limit. Subject to lending criteria.
Apply for or manage your overdraft
Overdraft usage costs

Cost breakdown for 20 days at an interest rate of 39.49% EAR

Arranged overdraft

£18.49

Unarranged overdraft

£3.70

Total interest

£22.19

The monthly cap on unarranged overdraft charges for our standard adult current accounts is £18.80. This includes an unpaid transaction fee of £1.55, if applicable. 

Representative example
Effective Annual Rate

39.49% (variable)

Representative APR

39.49% (variable)

Assumed credit limit

£1,200

How does our overdraft compare?

We give a Representative APR so it’s easier for you to compare the costs of using an arranged overdraft with different credit products (such as a loan or credit card).

As you have a Tailored Account, we might have agreed that you pay interest on an arranged and unarranged overdraft at a different to what we’ve used in this example. The above shows the maximum cost that most of our customers with a Tailored account would pay.

Available to eligible NatWest customers, UK residents aged 18 or over. Subject to lending criteria.
Apply for or manage your overdraft