Understanding the IH400 Probate Form

IH400 Form

Introducing the IH400 Probate Form

The IH400 Probate form is an important document used in the probate process in England. It is required to be completed by executors or administrators when applying for a Grant of Probate to handle the estate of a deceased individual. In this blog, we will provide a comprehensive guide to the IH400 Probate form, explaining its purpose, process, and significance in the probate application. Understanding the IH400 form is essential for individuals undertaking the probate process to ensure accurate and efficient estate administration.

Purpose of the IH400 Probate Form

The IH400 Probate form, officially known as the Inheritance Tax Account form, is used to report the details of the deceased’s estate, calculate the inheritance tax (IHT) liability, and apply for a Grant of Probate. The form captures crucial information about the estate’s assets, liabilities, and beneficiaries, enabling the tax authorities to assess the IHT due.
The completion of the IH400 Probate form is a legal requirement, ensuring that the correct amount of IHT is paid and the estate administration proceeds in compliance with the law.

IH400 Form

Process of Completing the IH400 Probate Form

The IH400 Probate form can be completed either online or in paper format. Executors or administrators are responsible for accurately providing all the necessary information related to the deceased’s estate. The form requires details such as the deceased’s personal information, assets, liabilities, gifts made during their lifetime, and information about the beneficiaries.
Executors must carefully gather and document all relevant financial information, including bank statements, property valuations, and details of any outstanding debts. Additionally, they must calculate the value of the estate and determine any exemptions or reliefs that may apply to reduce the IHT liability.

The IH400 Probate form also requires information about any trusts, lifetime gifts, and potentially exempt transfers that may impact the IHT calculation. Executors must provide supporting documentation, such as valuations and deeds, to substantiate the information provided in the form.

Significance and Legal Implications

The IH400 Probate form holds significant legal implications in the probate process. Completing the form accurately and in a timely manner is essential to ensure compliance with the law and to avoid penalties or delays in obtaining the Grant of Representation.
By providing a comprehensive account of the deceased’s estate, the IH400 form enables the tax authorities to assess the IHT liability and determine the appropriate amount of tax due. Failing to disclose all assets or providing inaccurate information on the form can result in penalties and potential legal consequences.

Considerations and Additional Forms

Executors should carefully consider additional forms that may be required in conjunction with the IH400 Probate form. Supporting forms such as IHT205 or IHT217 may be necessary if the estate qualifies for simplified reporting or if certain reliefs apply.
It is crucial to seek professional advice from a solicitor or tax advisor when completing the IH400 Probate form. They can provide guidance on complex matters such as IHT reliefs, valuation of assets, and identifying potential exemptions.


The IH400 Probate form plays a vital role in the probate process, allowing executors to report the details of the deceased’s estate and calculate the inheritance tax liability. Understanding the purpose, process, and legal implications of the IH400 form is crucial for accurately completing the probate application and ensuring compliance with tax regulations. Seeking professional advice and carefully gathering all relevant information and supporting documentation will help facilitate a smooth and efficient probate administration process.


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