MPs’ business costs
Sir Iain Duncan Smith
IPSA paid £2,621,125 against 991 published rows for Sir Iain Duncan Smith between 2010-11 and 2025-26 as the member for Chingford and Woodford Green BC. These are the costs of running an office and employing staff under IPSA’s rules. They are not salary, and the largest part of them is wages IPSA pays to the member’s employees rather than money the member receives.
By category, 2025-26
57 claims, £15,221 paid. The headings are IPSA’s own categories grouped; the categories inside each are named on the register page.
| Category | What it covers | Claims | Paid | Share |
|---|---|---|---|---|
| Office costs | Renting and running a constituency office: rent, utilities, equipment, stationery and postage. | 57 | £15,221 | 100.0% |
Every year in the register
Sir Iain Duncan Smith’s own years, not the register’s: the first is 2010-11 and the last is 2025-26. Figures are not adjusted for inflation, so a rise between two distant years is partly a rise in prices. Select a year to read it on its own.
| Year | Claims | Staffing | Office costs | Travel | Miscellaneous | Total |
|---|---|---|---|---|---|---|
| 2010-11 | 64 | £87,327 | £20,259 | £531 | — | £108,117 |
| 2011-12 | 63 | £106,830 | £20,112 | £629 | — | £127,571 |
| 2012-13 | 66 | £112,494 | £17,524 | £718 | — | £130,736 |
| 2013-14 | 64 | £102,945 | £14,935 | £995 | — | £118,874 |
| 2014-15 | 26 | £115,714 | £13,609 | £933 | — | £130,256 |
| 2015-16 | 42 | £128,587 | £15,172 | £1,398 | — | £145,157 |
| 2016-17 | 47 | £128,189 | £14,014 | £925 | — | £143,128 |
| 2017-18 | 41 | £131,828 | £18,785 | £2,609 | — | £153,222 |
| 2018-19 | 50 | £150,699 | £22,469 | £3,423 | — | £176,592 |
| 2019-20 | 76 | £158,666 | £23,743 | £2,463 | — | £184,873 |
| 2020-21 | 66 | £175,011 | £30,699 | £909 | — | £206,619 |
| 2021-22 | 54 | £197,447 | £13,234 | £1,035 | — | £211,717 |
| 2022-23 | 105 | £208,684 | £24,180 | £4,213 | £1,440 | £238,516 |
| 2023-24 | 72 | £238,162 | £24,807 | £2,104 | — | £265,073 |
| 2024-25 | 98 | £236,375 | £24,907 | £4,173 | — | £265,454 |
| 2025-26 | 57 | — | £15,221 | — | — | £15,221 |
A year in which Sir Iain Duncan Smith joined or left the House part-way through is a part year, and is not comparable with a full one.
What each category is made of, 2025-26
The cost types IPSA records inside each heading, largest first by what it paid.
Office costs
| Cost type | Claims | Paid |
|---|---|---|
| Postage & couriers | 4 | £4,259 |
| Stationery & printing | 10 | £3,912 |
| Maintenance, Redecorations & Repairs | 5 | £2,131 |
| Mobile telephone - contract & usage | 13 | £1,523 |
| Software & applications | 2 | £846 |
| Landline phone & internet - rental & usage | 7 | £827 |
Largest claims, 2025-26
The 15 rows IPSA paid most against, with IPSA’s own description of each. Read the description before the amount: IPSA publishes most of a member’s staffing as one row for the whole year — “Total Staffing budget payroll costs for the ⟨year⟩ year” — so the largest row here is usually a year of wages for the member’s employees and not something bought.
| Date | Category | Cost type | Description | Claimed | Paid |
|---|---|---|---|---|---|
| 10 February 2026 | Office Costs | Postage & couriers | Delivery Charge for MP Reports Back Leaflets in Chingford & Woodford Green Feb26 [***] | £3,600 | £3,600 |
| 28 January 2026 | Office Costs | Stationery & printing | MP Reports Back Leaflet Solopress Printing INV [***] | £2,495 | £2,495 |
| 2 June 2025 | Office Costs | Maintenance, Redecorations & Repairs | Quadient Annual Maintenance Contract July 25 to July 26 [***] | £1,444 | £1,444 |
| 15 January 2026 | Office Costs | Software & applications | Annual Hosting & Support Fee for Caseworker [***] | £738 | £738 |
| 23 February 2026 | Office Costs | Maintenance, Redecorations & Repairs | Replacement Lock after Break In Attempt Invoice [***] | £432 | £432 |
| 20 November 2025 | Office Costs | Stationery & printing | Printing of promotional leaflets to advertise House of Commons Tours with MP | £336 | £336 |
| 20 June 2025 | Office Costs | Postage & couriers | Leaflet Distribution Older Person´s Fair INV No [***] | £330 | £330 |
| 27 March 2026 | Office Costs | Landline phone & internet - rental & usage | Landline & internet package | £223 | £223 |
| 15 January 2026 | Office Costs | Postage & couriers | PEAC Printer return via Courier Now Ltd INV [***] 60% Total Cost | £211 | £211 |
| 26 February 2026 | Office Costs | Stationery & printing | Banner March 2026 | £208 | £208 |
| 7 October 2025 | Office Costs | Stationery & printing | Banner November 2025 | £208 | £208 |
| 27 March 2026 | Office Costs | Utilities | Electricity | £194 | £194 |
| 15 January 2026 | Office Costs | Utilities | Electricity | £194 | £194 |
| 12 June 2025 | Office Costs | Utilities | Electricity | £194 | £194 |
| 17 March 2026 | Office Costs | Stationery & printing | Banner March 2026 | £186 | £186 |
What this page does not show
Whether any of it was justified. IPSA accepted these claims under its own rules and the register records what was paid, not whether it should have been. A large total is not a finding about the member.
Nor how Sir Iain Duncan Smith compares with another member. After staffing the largest headings are accommodation and travel, and both are decided mostly by where a constituency is: a member several hundred miles from Westminster is eligible for costs a member with a London seat is not. Two members’ totals are two sets of rules as much as two sets of choices, and the length of service differs too.
It is also not pay. IPSA sets and publishes MPs’ salaries separately and they are not in this register; the staffing figure here is the salaries of the member’s employees.
All MPs’ business costs · Sir Iain Duncan Smith’s register of interests and votes · Sources