Mortgage adviser business records HMRC rules are stricter than most advisers expect, and the responsibility sits with you, not your accountant. This guide sets out exactly which records to keep, how long to retain them, and what happens if HMRC finds a gap.
If you have spent the last decade advising clients on mortgages, you have probably built a solid routine around lender criteria, affordability calculators and protection sales. Record keeping often sits at the bottom of the list. That is understandable. But when HMRC opens an enquiry, the paperwork you did not keep is the paperwork that costs you money.
Mortgage adviser business records HMRC compliance is not a complicated concept, yet it quietly trips up experienced brokers every year. Commission arrives from multiple lenders and networks. Clawbacks arrive months later. Some advisers run a limited company, others are sole traders, and many sit inside a network that already deducts fees before paying out. Untangling all of that at year end is painful. Keeping a clear record as you go is not.
I have worked with mortgage advisers through both straightforward filings and uncomfortable HMRC enquiries, and the difference between the two is almost always the quality of the records. Not the size of the business. Not the sophistication of the software. Just whether the evidence exists.
If you are still deciding how to structure your business, our guide on sole trader or limited company for a mortgage adviser explains how the choice affects your obligations. If you have already decided, read on.
Mortgage advisers must keep records that prove every figure on their tax return. That means business bank statements, lender commission statements, procuration fees, client invoices and expense receipts. Without these, you cannot defend your figures if HMRC asks questions, even if your accountant prepared the return.
In practice, most advisers need to hold these ten categories of record. Some apply to you from day one. Others only become relevant when you register for VAT or take on staff.
Statements for every account the business uses, including current accounts, savings accounts and business credit cards. If you are a sole trader who occasionally uses a personal account for business transactions, keep those statements too and highlight the relevant entries.
Lender commission statements, procuration fees, mortgage network statements, client fee invoices, protection commission, referral income and clawback records. This is the single most important category for a mortgage adviser, because income rarely arrives from one tidy source.
Business loan agreements, finance documents, repayment schedules and interest statements, where applicable.
Invoices and receipts for costs incurred wholly and exclusively for the business. For mortgage advisers that usually means mortgage sourcing software, network fees, professional indemnity insurance, FCA fees, advertising, telephone, office costs and accountancy fees. Where something is used partly for personal purposes, work out the business proportion and keep a note of how you apportioned it.
Purchase invoices for laptops, computers, office equipment, furniture and vehicles, along with disposal records when you sell or scrap them.
If you trade through a limited company, retain annual accounts, the CT600 Corporation Tax return, tax computations and detailed income and expense breakdowns. Your accountant will normally supply copies, but the duty to keep them rests with the company.
If you are a sole trader, keep Self Assessment returns, tax calculations, income and expense breakdowns, and any Making Tax Digital submissions and digital records.
Where you employ staff or administrators, retain payroll reports, PAYE records, employee payments, tax deductions, National Insurance contributions and pension contribution records, along with subcontractor invoices and payment records.
If you are VAT registered, keep VAT returns, workings, sales and purchase invoices, records of exempt and taxable income, and supporting calculations. Our guide on VAT return online services covers the filing side in more detail.
Records of amounts owed by or to the business, director's loan accounts, dividend documentation, tax payments, accounting adjustments and relevant HMRC correspondence.
Important: HMRC requires adequate supporting records even when your accountant prepares and submits your accounts and tax returns. You and your fellow directors remain responsible for making sure those records exist. This is the point advisers most often misunderstand.
Sole traders must keep business tax records for at least five years after the 31 January Self Assessment deadline for that year. Limited companies must keep Corporation Tax records for six years from the end of the accounting period. VAT records are generally kept for six years and PAYE records for three years.
| Business or record type | Minimum retention period |
|---|---|
| Sole trader business tax records | 5 years after the relevant 31 January Self Assessment deadline |
| Limited company Corporation Tax records | 6 years from the end of the relevant accounting period |
| VAT records (if VAT registered) | Generally 6 years |
| PAYE and payroll records | 3 years from the end of the relevant tax year |
| Fixed asset and long term contract records | Potentially longer, depending on the circumstances |
HMRC can require a longer retention period if an enquiry is open, a return was filed late, or a transaction spans several accounting periods. If you are unsure, keep the records for longer rather than shorter. Storage is cheap. Reconstructing a missing commission statement from three years ago is not.
Worked example: a mortgage brokerage limited company has an accounting year ending 31 December 2026. It should generally keep its Corporation Tax accounting records until at least 31 December 2032. A sole trader adviser filing a 2025/26 Self Assessment return by 31 January 2027 should keep those records until at least 31 January 2032.
Not every mortgage adviser must use digital bookkeeping, but Making Tax Digital for Income Tax is being phased in by income threshold. If your qualifying income is above the relevant limit on the start date, you must keep digital records in compatible software and submit quarterly updates to HMRC.
| Start date | Qualifying income threshold |
|---|---|
| 6 April 2026 | Over £50,000 |
| 6 April 2027 | Over £30,000 |
| 6 April 2028 | Over £20,000 |
Qualifying income generally means gross income from self employment and property before deducting expenses. For a busy mortgage adviser, commission alone can push you over the £50,000 mark without much difficulty, so it is worth checking your position early rather than assuming MTD is a problem for somebody else.
VAT registered businesses must also follow MTD for VAT unless exempt. Even where digital bookkeeping is compulsory, the underlying invoices, receipts and bank statements still need to be kept and stored sensibly.
If you would rather not manage this yourself, our cloud accountants service covers digital bookkeeping, quarterly updates and the filing that goes with it.
Not sure whether you need a bookkeeper at all? Read our guide asking do I need bookkeeping for my mortgage advice business, which separates the legal duty to keep records from the optional cost of monthly bookkeeping services.
If you have not yet decided how to trade, our comparison of sole trader or limited company for a mortgage adviser explains how your structure changes the records you must keep, and our limited company annual accounts service covers the year end filing that follows.
HMRC can request records whenever it needs to check whether you have reported income, expenses and tax correctly. You do not send everything with your return, but the records must be available on request. Most compliance checks begin with a written information notice.
HMRC reviews a self-employed adviser's declared income, expenses and tax calculations, often focusing on commission and expenses claims.
HMRC examines a limited company's accounts, expenditure and CT600. Director's loan accounts and dividends are common areas of interest.
HMRC reviews registration, VAT returns, taxable and exempt income, and input tax recovery. Advisers selling exempt financial products need care here.
HMRC reviews salary payments, payroll records and deductions, including director's salaries and benefit in kind reporting.
Where HMRC spots errors, discrepancies, undeclared income or wider compliance concerns, often using data from lenders, networks and third party platforms.
Failure to keep or retain adequate records can trigger penalties, and these are separate from any tax, interest or inaccuracy penalties that arise if your figures are wrong. The main ones are set out below.
| Failure | Potential HMRC penalty |
|---|---|
| Inadequate Self Assessment records | Up to £3,000 |
| Inadequate limited company accounting records | £3,000 fine may apply |
| Inadequate PAYE records | Up to £3,000 |
| Failing to preserve required VAT records | £500 penalty may apply |
| Failing to comply with a formal information notice | Initial £300 penalty |
| Continued failure to comply with a notice | Further penalties of up to £60 per day |
These amounts reflect HMRC's published guidance. Actual penalties depend on the legislation that applies and your individual circumstances, and they are not imposed automatically every time a document is missing. The bigger financial risk is usually the consequence of poor records rather than the record keeping penalty itself. If HMRC cannot verify a commission figure or an expense claim, it may disallow it, which can cost far more than £3,000.
If you have already received a letter, our guide to understanding HMRC letters explains how to read it and what to do next, including the deadlines that matter.
The easiest approach is to keep records continuously rather than in a panic at year end. A separate business bank account, bookkeeping software with bank feeds, and a habit of saving commission statements as they arrive will handle most of the work. Seven simple habits prevent almost every disaster I have seen.
Use a separate business bank account. Keeping business income and expenses clearly identifiable removes the worst part of year end reconstruction. Our guide on a business bank account for a limited company explains what to look for.
Record transactions in bookkeeping software and, wherever possible, connect the bank account through automatic bank feeds.
Keep digital copies of invoices and receipts. A photo on your phone is far better than a paper receipt in a drawer you will never open again.
Download lender and network commission statements regularly and reconcile them against bank receipts. Clawbacks are the usual cause of mismatches.
Review income and expenses monthly. Fifteen minutes a month catches missing transactions while they are still easy to trace.
Keep copies of accounts and tax returns prepared by your accountant, including the supporting calculations.
Store everything securely in the cloud with proper access controls, and make sure it stays accessible for the full retention period.
Pull together the last twelve months of lender commission statements and check them against your bank receipts. If they do not reconcile, you have found the exact area HMRC would ask about first. Fixing it now, quietly, is much cheaper than fixing it during an enquiry.
Quick answers to the questions mortgage advisers ask us most often about record keeping.
At Taxwise Accountancy, our chartered accountants and tax advisers have around twenty years of experience in UK accounting and taxation. We work with mortgage advisers who operate as sole traders, who trade through a limited company, and who run growing brokerages with staff.
We understand the practical realities of your work. Lender commissions that arrive at odd times. Network deductions that make gross income look nothing like the money in your account. Clawbacks that land in a different tax year. Protection income sitting alongside mortgage fees. Getting the records right in that environment is easier when your accountant has seen it many times before.
We can help you set up a sensible bookkeeping routine, prepare annual accounts, handle Corporation Tax and Self Assessment, manage VAT and payroll, and make sure your records would stand up to scrutiny if HMRC ever came calling.
Book a free consultation and we will review how you currently keep records, flag the gaps and tell you honestly what needs to change.
Written and reviewed by the qualified team at Taxwise Accountancy, ACCA, AAT and IFA qualified accountants with around twenty years of experience supporting UK businesses, contractors and professional advisers. This guide is general information and is not a substitute for advice on your own circumstances.
Related reading from our team: our accounting and tax blog, accountants for mortgage advisers, and our transparent pricing.