HMRC Edition HMRC 09/15 2 pages

IHT406 — Bank and building society accounts and National Savings & Investments

The IHT400 schedule where every account in the deceased's sole name is listed with its balance on the day they died.

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IHT406 bank accounts and NS&I · Inheritance Tax: Bank and building society accounts and National Savings & Investments (Schedule IHT406)
The official HMRC form, edition HMRC 09/15 — blank
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IHT406 bank accounts and NS&I (2015) Inheritance Tax: Bank and building society accounts and National Savings & Investments (Schedule IHT406) — page 1 of 2
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IHT406 bank accounts and NS&I (2015) Inheritance Tax: Bank and building society accounts and National Savings & Investments (Schedule IHT406) — page 2 of 2
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Fill this form online Blank PDF from HMRC

What is IHT406 bank accounts and NS&I?

When an estate needs a full Inheritance Tax account on form IHT400, the money the deceased held in banks, building societies and National Savings & Investments is listed on schedule IHT406. Each account goes on its own line with the balance at the date of death, including any interest earned up to that day.

The form has four tables: sole bank and building society accounts (including cash ISAs), National Savings accounts, Premium Bonds (with any unclaimed prizes), and other NS&I products such as savings certificates and income bonds. Joint accounts, business accounts and overdrawn accounts belong elsewhere, on IHT404, IHT413 and box 82 of IHT400.

FileIt shows just as many lines as you have accounts, adds up each table and works out the figures to copy to IHT400 boxes 52 and 54, then prints it all into HMRC's own IHT406 PDF.

Who fills it
The executor or administrator preparing form IHT400
Part of
Form IHT400, the Inheritance Tax account
Totals go to
IHT400 box 52 (bank accounts) and box 54 (NS&I)
Room for
9 bank accounts, 3 NS&I accounts, 6 Premium Bond lines, 3 other NS&I products
Edition
HMRC 09/15
Helpline
Inheritance Tax helpline 0300 123 1072 (+44 300 123 1072 from abroad)

Who needs to fill out IHT406 bank accounts and NS&I?

  • Executors and administrators filling in IHT400 for an estate where the deceased had money in their own name.
  • Anyone listing Premium Bonds or NS&I savings for an estate, as these have their own boxes.
  • Not needed in Scotland if you've filled in inventory form C1. Then you only enter the bank total in box 52 of IHT400.

When to use IHT406 bank accounts and NS&I

  • Once you have date-of-death balance letters from each bank, building society and NS&I.
  • Alongside the other IHT400 schedules, before you send the account to HMRC.
  • If there are more accounts than lines, fill in a second copy of the form.

What you need before you start

  • The deceased's name, date of death and Inheritance Tax reference, if you have one.
  • For each sole account: the bank or building society, the account or roll number and the balance with interest at the date of death.
  • NS&I account types, numbers and balances.
  • Premium Bond holder and bond numbers, their value, and any prizes won but not claimed or cashed.
  • Any other NS&I products, with certificate numbers and values including interest.

What’s on IHT406 bank accounts and NS&I

The 2015 edition has 2 pages. FileIt asks for it in 3 parts:

  1. The person who has diedExecutor or administrator
  2. 1 Bank and building society accounts (sole accounts)Executor or administrator
  3. 2 to 5 National Savings & InvestmentsExecutor or administrator

How to fill out IHT406 bank accounts and NS&I, step by step

1 About the deceased

Name, date of death and Inheritance Tax reference. FileIt can pre-fill the name from the person's record in your vault.

2 Box 1: bank and building society accounts

Say how many sole accounts there are, then give each one's name, account number and balance with interest. FileIt adds them up for box 1, which you copy to IHT400 box 52.

3 Box 2: National Savings accounts

For example Investment or Direct ISA accounts, with account numbers and balances.

4 Box 3: Premium Bonds

Holder and bond numbers, the bond value (A) and any unclaimed or uncashed prizes (B). FileIt works out A + B on each line and the total.

5 Boxes 4 and 5: other NS&I and the NS&I total

Products such as savings certificates and income bonds. FileIt adds boxes 2, 3 and 4 for box 5, which goes to IHT400 box 54.

Common mistakes to avoid

  • Listing joint accounts here. They go on IHT404, jointly owned assets.
  • Leaving out interest earned up to the date of death.
  • Forgetting Premium Bond prizes that hadn't been claimed or cashed.
  • Including overdrawn accounts. Show those as debts at box 82 of IHT400.
  • Not copying the totals to boxes 52 and 54 of IHT400.

After you fill it out

Check each balance against the banks' and NS&I's letters, then download the filled PDF.

Copy box 1 to IHT400 box 52 and box 5 to box 54, and send IHT406 with the rest of your IHT400 account. FileIt doesn't send anything to HMRC.

Keep the balance letters and a copy of the schedule in the deceased's FileIt folder.

Fill out IHT406 bank accounts and NS&I online with FileIt

  1. Pick the person. Choose someone from People and FileIt fills in their name, date of birth, address and other details it already knows.
  2. Answer plain-language questions. One part of the form at a time, with the official help text beside each question — 87 fields in all. Your answers save as you go.
  3. Check the live preview. Watch your answers land on the real HMRC form, and let FileIt do any worksheet arithmetic.
  4. Generate the official PDF. FileIt prints your answers into the agency’s own PDF and files it in that person’s folder in your vault.

FileIt fills the form — it never files or submits anything for you. Deliver the finished form to whoever asked for it, the way the form’s instructions say.

Start IHT406 bank accounts and NS&I now — it’s free

IHT406 bank accounts and NS&I: frequently asked questions

Do cash ISAs go on IHT406?

Yes. Cash ISAs held in the deceased's sole name are listed with the other bank and building society accounts in box 1.

Where do joint accounts go?

On schedule IHT404, jointly owned assets. IHT406 is only for accounts in the deceased's sole name.

How do I value Premium Bonds?

Use the value of the bonds at the date of death (column A) plus any prizes won but not yet claimed or cashed (column B). NS&I can confirm both.

What if there are more accounts than lines?

Fill in another copy of IHT406 for the rest, as the form says.

Does the deceased or the executor sign IHT406?

Neither signs the schedule itself. The declaration on form IHT400 covers all its schedules.

Official sources

FileIt is not affiliated with or endorsed by HMRC or any government. This page explains the form in general terms and is not legal, tax or immigration advice. Always read the official instructions, and check that you are using the edition the recipient accepts. Page last reviewed 2026-10-19.

Fill out IHT406 bank accounts and NS&I online