Fixed Asset Register Setup: A UK Step-by-Step Guide
To set up a fixed asset register, list every long-term asset your business owns, give each one a unique ID, and record its cost, purchase date, location, useful life and depreciation method. Then add a column for the tax treatment, because UK accounts and tax computations treat the same asset differently. The rest of this guide shows you how to do it in a way that holds up at year end and under an HMRC enquiry.
TL;DR
A register is a running list of each fixed asset with its cost, date, location, life, depreciation and disposal details.
Keep accounting depreciation and tax capital allowances in separate columns. Depreciation is added back in the tax computation; allowances replace it.
Record how each asset was acquired and what happened to it later, because HMRC’s guidance says both can change the tax result.
Set it up once with clear rules (capitalisation threshold, categories, ID format), then update it every month with your bookkeeping.
A spreadsheet works for a small asset base. Move to accounting software when the count or the number of sites grows.
Table of Contents
What a fixed asset register is for
A fixed asset register is the master list behind the “fixed assets” line on your balance sheet. It answers four questions: what do we own, what did it cost, what is it worth now, and where is it?
It matters for three practical reasons:
Your accounts. Under FRS 102, the notes to the accounts must show the opening and closing cost and the movements for each class of fixed asset, including acquisitions, disposals, transfers and revaluations, according to the FRC’s FRS 102 standard. A good register produces those figures directly.
Your tax return. Capital allowances depend on what you bought, when, and how you used it.
Your own control. Laptops, vehicles and machinery go missing, get replaced or stop being used. Without a list, you keep depreciating things you no longer have.
If you want to see how a register supports the wider evidence behind your numbers, our piece on what an audit trail is and why it matters covers the principle.
Step 1: Decide what goes in
Start by agreeing the scope. For most small UK businesses, the usual categories are:
Computers and IT equipment
Office furniture and fittings
Plant and machinery
Motor vehicles
Leasehold improvements
Intangibles such as capitalised software or website development (if you capitalise them)
HMRC’s description of plant and machinery allowances is a useful guide to the tax side. It says the allowances broadly cover fixed assets used in a business other than intangible assets, land, buildings and most structures, with computer software potentially treated separately (HMRC Capital Allowances Manual, CA20006). So you will typically keep land, buildings and intangibles in the register for accounting, but they follow different tax rules.
Then set a capitalisation threshold: the cost below which you simply expense an item. A £40 keyboard does not need a row. Write the threshold down, apply it consistently and keep it with your accounting policies. The figure is your choice and should suit the size of your business.
Step 2: Choose your columns
A register is only as useful as its fields. Software guidance on registers suggests recording a unique identifier, name and description, purchase cost and date, capitalisation date, cost centre, asset life and depreciation value, plus location, condition, expiry or replacement dates and relevant certificates (VisionPro’s register guide). For a UK small business, we suggest this core set:
Column | What to record | Why it matters |
Asset ID | Unique code, for example IT-0001 | Links the row to a physical tag and to invoices |
Description | Make, model, serial number | Proves the asset exists |
Category | IT, vehicles, plant and so on | Drives the depreciation rate and the accounts note |
Supplier and invoice ref | Who and which document | Supports the cost |
Acquisition method | Bought, gifted, already used elsewhere in the business | Can affect qualifying expenditure |
Purchase date | Date of acquisition | Starts the clock for tax |
Capitalisation date | When it went into use | Usually when depreciation starts |
Cost | Net of recoverable VAT | Basis for depreciation and allowances |
Location and user | Site, room, person | Makes physical checks possible |
Useful life and method | For example 3 years, straight line | Sets the depreciation charge |
Accumulated depreciation | Running total | Feeds net book value |
Net book value | Cost less accumulated depreciation | Balance sheet figure |
Tax treatment | Pool, allowance claimed, business-use % | Feeds the tax computation |
Disposal date and proceeds | If sold, scrapped or lost | Needed for profit or loss and tax adjustments |
Net book value is cost less accumulated depreciation. A £1,000 asset with £100 of accumulated depreciation has a net book value of £900, as Clear Books’ fixed asset guide illustrates.
Step 3: Load your opening balances
If you are starting from nothing, work through the business in this order:
Pull the fixed assets from last year’s accounts and the nominal ledger.
Match each balance to invoices, bank statements and hire purchase agreements.
Walk the premises. Tag each item with its ID and note its condition and location.
Add anything owned but never capitalised, and remove anything sold or scrapped.
Reconcile the register total to the ledger. The cost, accumulated depreciation and net book value totals per category must agree with your control accounts.
That reconciliation is the test of a successful setup. If the register and the ledger disagree, find out why before you go further.
If you use accounting software, the setup follows the same logic. Vendor documentation, such as CCH’s guide to creating a fixed asset register, walks through opening an accounting period, choosing automatic asset codes, setting depreciation behaviour for the periods of acquisition and sale, and then creating asset classes with their control accounts, depreciation accounts and default methods. Our guide to setting up accounting software without a migration failure covers the wider checklist.
Step 4: Set depreciation rules, then keep tax separate
Choose a method and life for each category and apply them consistently. Straight line over an estimated useful life is the most common for small companies. Decide, and write down, whether you charge a full month in the month of purchase and none in the month of sale, or some other convention.
Then keep the tax column separate. HMRC’s manual states that accounting depreciation is not deductible when calculating taxable profits, and that plant and machinery capital allowances may give relief instead where the qualifying activity and expenditure conditions are met (CA20006). HMRC’s toolkit adds that depreciation, impairment, revaluation movements and profit or loss on sale generally need to be added back in the tax computation, even where you do not claim capital allowances (HMRC Capital Allowances toolkit).
In practice: your accounts show cost less depreciation, your tax computation adds the depreciation back and substitutes allowances. The register holds the facts both calculations need, so you only enter each fact once.
Step 5: Keep the records HMRC expects
HMRC recommends recording each plant or machinery acquisition and disposal, including the asset name, acquisition date and cost, and the disposal date and proceeds or value (HMRC guidance on claims and record keeping). It also recommends noting how each item was obtained, for example bought, received as a gift or already in use for another purpose, because this may affect qualifying expenditure. That is why the register above has an acquisition method column.
The same toolkit stresses that detailed acquisition and disposal records matter because ownership, changing business use and disposal values can change the correct treatment. If a laptop is partly personal, or a van moves from trade to private use, note the date and the business-use percentage.
Two further cases:
VAT Capital Goods Scheme. If an asset falls within it, HMRC’s Notice 706/2 says your records should include the VAT incurred, the input tax reclaimed, the start and end dates of each adjustment interval and, where relevant, the date and value of disposal. Add those fields for the assets concerned.
Leases. If you lease equipment, your accounting treatment may be changing under FRS 102. See our FRS 102 leases checklist for the register implications.
If you hold investment property or rental assets, specialist accounting software for rental property may suit the way you track those assets better than a general register.
Step 6: Keep it current
A register set up well and then ignored is worse than none, because it looks reliable. Build these habits:
Monthly: when bookkeeping codes an invoice to a fixed asset account, add the row the same day. Post depreciation as part of month-end.
On every disposal: record the date, proceeds and any profit or loss, then remove the asset from the active list but keep the row.
Annually: do a physical check against the register before year end, and review lives and conditions. Impaired or obsolete items should be flagged to your accountant.
Always: keep the supporting invoices where you can find them from the asset ID.
If you are weighing up when a spreadsheet stops being enough, one software vendor’s view is that a simple spreadsheet may suit a single building or office, while several sites may call for a fuller system. We would add one more test: if you cannot reconcile the register to the ledger in under an hour, it has outgrown a spreadsheet.
Our perspective
Most register problems we see are not about maths. They start when a purchase is coded to the wrong account, a disposal is never recorded, or tax and accounting figures are mixed in one column. We build the register alongside the bookkeeping, so each invoice coded to a fixed asset creates the row, and the depreciation and the tax figures both come from the same record. For a young company, that discipline pays off at the first set of statutory accounts, and again if you ever face due diligence or an audit readiness review.
Our advice: keep it boring. A short capitalisation policy, one ID format, one reconciliation each month. Add sophistication only when the business needs it. If you are also preparing for upcoming reporting changes, our note on FRS 102 Section 1A changes shows what small companies should expect.
— Shoaib
Getting help with setup
If you would rather not build the register yourself, we set up and maintain them as part of our bookkeeping, accounts preparation and year-end reporting work for UK founders, startups and small businesses. Our published monthly accounting packages run from £99 to £199 per month, and the team can also support VAT, payroll, tax planning and audit readiness checks.
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See what is included and get in touch on the Keystone Financial Advisory homepage.
FAQ
Do I need a fixed asset register if I only have a few assets?
Yes, though it can be a simple spreadsheet. Your accounts still need cost, depreciation and disposal figures, and your tax computation needs acquisition and disposal details for capital allowances. A small register takes minutes to maintain and saves hours at year end.
What is the difference between a fixed asset register and an asset register template?
A template is the blank layout of columns. The register is the live record you fill in, reconcile to your ledger and update as assets are bought, moved and sold. Use a template to start, but the reconciliation and the update routine are what make it reliable.
Should depreciation and capital allowances be in the same column?
No. Accounting depreciation is added back in the tax computation, and capital allowances are claimed instead where they apply. Keep separate columns so each calculation can be traced and neither one distorts the other.
How often should I update the register?
Update it whenever an asset is bought, moved or disposed of, and post depreciation monthly or at least quarterly. Do a physical check and a reconciliation to the ledger at least once a year, before your accounts are prepared.
Sources
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