Working Tax Credits Contact Number: 0345 300 3900

You can contact HM Revenue and Customs on the number for Working Tax Credits enquiries 0345 300 3900 to check your eligibility for the benefit, to calculate your entitlement or to discuss the outcome of an application over the phone.


Working Tax Credits Number – 0345 300 3900

Paid by the HM Revenue and Customs (HMRC), Working Tax Credits can be claimed by people in employment but on a low income. You should therefore contact the HMRC department for working tax credits on the following telephone number 0345 300 3900 to check you eligibility if you would like additional financial support. An advisor can provide a link to an online benefit calculator tool, discuss the likelihood of your claim over the phone or set up a meeting at your nearest Jobcentre. Alternatively, you may use this number to ask for a Working Tax Credits application form to be sent to your home address before returning it to the address provided. However, it should be noted that in certain postcodes, you will have to claim for Universal Credit as the newer benefit is being rolled out as a replacement. You can therefore ask the HMRC to detail whether you are best applying for the older or newer benefit on this number.

You should also phone the HMRC Working Tax Credits number 0345 300 3900 to report a change of circumstances that may affect your eligibility for the benefit. Notably, if you have had a change of employment or household circumstances, then you may have to pay back any instalments that you were not entitled to receive. It also advised to call this number to report an issue that may affect your attendance at a Jobcentre meeting before rescheduling your appointment accordingly.


HMRC Call Costs and Contact Hours

The Working Tax Credit department runs a non-geographic area code that will charge callers the same standard per-minute rate as any local number made from a UK mobile or landline telephone. However, you can contact the HMRC for free if you have inclusive minutes in your mobile tariff or if your landline package is bundled with free calls. Callers can get in touch with a representative from the HMRC during their phone line opening hours of 8am-8pm, Monday to Friday, 8am-4pm Saturdays and 9am-5pm on Sundays.


HMRC Phone Numbers

HMRC Department UK Phone Number
Working Tax Credit Enquiries 0345 300 3900
HMRC General Enquiries 0300 200 3300
National Insurance Enquiries 0300 200 3500


Write to the HMRC

However, if you are making your Working Tax Credits application in writing then you should send any completed forms to the the postal address of HM Revenue and Customs as follows: HM Revenue and Customs, BX9 1AS,United Kingdom.