How Does MTD for VAT Apply to a Law Firm? A Compliance Guide for Solicitors

What Is MTD for VAT and Why Does It Matter for Your Law Firm?

Making Tax Digital for VAT (MTD for VAT) is HMRC's mandatory digital reporting system for VAT-registered businesses, including law firms. Since April 2022, all VAT-registered businesses have been required to keep digital records and submit VAT returns using compatible software. For solicitors, this is not optional. If your law firm is VAT-registered, you must comply.

The core requirement is straightforward: you must maintain your VAT records in a digital format and use software that can submit returns directly to HMRC. This applies whether you are a sole practitioner conveyancer, a multi-partner LLP, or an ABS. The days of manually entering figures into HMRC's online portal are over.

For most law firms, this means reviewing how you record transactions such as professional fees (standard-rated for VAT at 20%), disbursements, and client account movements. The SRA Accounts Rules already require meticulous record-keeping. MTD for VAT adds a digital layer on top of that.

Who in the Law Firm Is Responsible for MTD for VAT Compliance?

The COFA (Compliance Officer for Finance and Administration) is the natural owner of MTD for VAT compliance. However, every partner and fee-earner who handles billing or disbursements has a role to play. If your firm uses a practice management system that integrates with your accounting software, the data flow must be correct from the point of invoice creation.

A common mistake is treating MTD for VAT as purely an accounting issue. In a law firm, the billing process generates the VAT data. If a solicitor incorrectly categorises a disbursement as a rechargable expense, the VAT treatment can be wrong. The COFA should ensure that all fee-earners understand the basics of VAT on legal services.

For example, a conveyancing solicitor handling a property purchase must know that their legal fees are standard-rated, but the SDLT payment they handle on behalf of the client is not subject to VAT. Getting this wrong in the digital records creates a compliance risk.

What Software Do Law Firms Need for MTD for VAT?

Bridging Software and Functional Compatible Software

HMRC requires that VAT returns are submitted through "functional compatible software." This means software that can connect to HMRC's API, keep digital records, and submit returns. There are two main approaches for law firms.

Option 1: All-in-one accounting software. Products like Xero and QuickBooks are fully MTD-compatible. If your law firm uses Xero or QuickBooks for its bookkeeping, you can submit VAT returns directly from within the software. This is the simplest route for most firms.

Option 2: Bridging software. If your firm uses a legacy practice management system that cannot connect to HMRC, you need bridging software. This is a tool that takes the VAT data from your existing system and submits it to HMRC. Examples include Taxfiler, BTCSoftware, and some add-ons for practice management platforms.

Bridging software is particularly relevant for law firms that have invested heavily in custom-built or older practice management systems. You do not need to replace your entire system. You just need a bridge to HMRC.

Xero vs QuickBooks for Law Firms

Both Xero and QuickBooks are popular among solicitors. Xero is often preferred for its strong integration with practice management software like PracticeEvolve and Osprey. QuickBooks is widely used by smaller firms and sole practitioners for its lower cost and ease of use.

Whichever you choose, ensure it supports MTD for VAT submissions. Both do. The key decision factor is how well the software integrates with your billing system. If your fee-earners generate invoices in a practice management system, that data must flow into your accounting software without manual rekeying.

A real example: a three-partner litigation firm in Manchester switched from manual Excel-based VAT returns to Xero with bridging software from their practice management system. The COFA reported a 40% reduction in time spent on VAT compliance and zero HMRC penalty notices since the switch.

Step-by-Step: How to Implement MTD for VAT in Your Law Firm

Step 1: Audit Your Current VAT Process

Map out how VAT data flows through your firm. Where are invoices created? How are disbursements recorded? Who reconciles the VAT account? Identify any manual steps that could introduce errors.

For most law firms, the biggest risk is the treatment of client account transactions. Remember: client money held in the client account is not subject to VAT. Only your professional fees and rechargable disbursements are. Ensure your chart of accounts clearly separates these.

Step 2: Choose Your Software

If you already use Xero or QuickBooks, check that you are on a version that supports MTD for VAT. If you use a practice management system, ask your provider whether they offer a direct integration or recommend a bridging software partner.

Do not assume your current setup is compliant. Many law firms discovered in 2022 that their old practice management system could not submit VAT returns digitally. The bridging software market has grown significantly since then.

Step 3: Set Up Digital Records

HMRC requires that you keep the following in digital form: your business name and VAT registration number, the time of supply (tax point), the value of the supply, and the VAT rate applied. For law firms, this means every invoice must be stored digitally, not just on paper.

If you use a practice management system that stores invoices as PDFs, that is acceptable as long as the key data points are captured in a digital format that feeds into your accounting software. The SRA Accounts Rules already require you to keep records for six years, so this should align with your existing retention policies.

Step 4: Test Your Submission

Before your first MTD-compliant VAT return, run a test submission. Most software providers offer a sandbox environment where you can submit a dummy return to HMRC's test API. This ensures your software is correctly configured and your data maps to the right fields.

If you use a bridging software, test that the data transfer from your practice management system is accurate. A common issue is that disbursements coded as "rechargable" are incorrectly included in the VAT return as standard-rated supplies when they should be outside the scope of VAT.

Step 5: Train Your Team

Every fee-earner who creates invoices or handles disbursements needs basic training on MTD for VAT. They do not need to understand the software in detail, but they must know how to correctly categorise transactions. The COFA should provide a one-page guide covering the most common scenarios: professional fees (20% VAT), disbursements (outside scope if paid to a third party), and client account transfers (no VAT).

For example, a trainee solicitor handling a personal injury case might need to know that medical report fees paid to a doctor are a disbursement outside the scope of VAT, but the firm's admin fee for arranging the report is standard-rated. Getting this wrong in the digital records creates a mismatch that HMRC's systems will flag.

Common MTD for VAT Pitfalls for Law Firms

Pitfall 1: Treating All Disbursements as VATable

Many law firms incorrectly include all disbursements in their VAT return. The rule is simple: if you pay a third party on behalf of the client and recharge it at cost, it is outside the scope of VAT. Examples include court fees, search fees, and SDLT. If you add a markup, the markup is standard-rated, but the base cost is not.

Your digital records must reflect this distinction. Use separate nominal codes for rechargable disbursements and standard-rated supplies.

Pitfall 2: Forgetting the Partial Exemption Rules

Some law firms handle exempt supplies, such as certain insurance-related services or property transactions. If your firm makes both taxable and exempt supplies, you may need to apply partial exemption calculations. This is complex and often requires specialist advice.

MTD for VAT does not change the partial exemption rules, but it does require that your digital records capture the split correctly. If you use Xero or QuickBooks, you can set up separate tax codes for exempt supplies.

Pitfall 3: Ignoring the Penalty Regime

HMRC introduced a new penalty system for late VAT returns and late payments from January 2023. The old default surcharge regime is gone. Now, you receive points for each late submission. Reach a threshold (4 points for annual filers, 5 for quarterly) and you face a £200 penalty. Further late submissions trigger additional penalties.

For law firms, where cash flow can be lumpy due to client account timing, this is a real risk. Ensure your MTD software sends reminders before the submission deadline.

How MTD for VAT Interacts with the SRA Accounts Rules

The SRA Accounts Rules require that client money is held separately and recorded in a client ledger. MTD for VAT does not change this, but it does require that your digital records clearly separate client money from your firm's money. HMRC is interested in your business's VAT position, not the client account.

However, a common error is accidentally including client account transactions in your VAT return. For example, if you transfer money from client account to office account to pay your fees, the transfer itself is not a VAT event. Only the underlying invoice is. Your MTD software should only see the invoice data, not the bank transfer.

If you use a practice management system that integrates with your accounting software, ensure the integration filters out client account movements. Otherwise, your VAT return could be inflated with non-VATable transactions.

What Happens If Your Law Firm Does Not Comply?

HMRC can issue penalties for non-compliance with MTD for VAT. The penalties are not just for late returns. If HMRC finds that you are not keeping digital records or not using functional compatible software, they can impose a penalty of up to £400 per quarter. For a law firm, this is an avoidable cost.

More importantly, non-compliance can trigger a VAT inspection. HMRC's systems are designed to flag anomalies. If your digital records do not match the expected pattern for a law firm, you may face a full review. This is time-consuming and expensive, especially if it reveals deeper issues with your VAT accounting.

If you are a COFA, MTD for VAT compliance should be on your risk register. The SRA expects COFAs to ensure the firm's financial systems are robust. A VAT penalty or inspection could be seen as a regulatory risk.

Practical Steps for COFAs and Partners

If you are responsible for MTD for VAT in your law firm, start with a compliance audit. Review your current software setup, your digital record-keeping, and your team's understanding of VAT rules. If you identify gaps, address them before your next VAT return.

Consider using a specialist solicitor accountant who understands both the SRA Accounts Rules and MTD for VAT. Generalist accountants may not appreciate the nuances of client account treatment or the partial exemption rules that apply to some legal services.

We offer COFA compliance support specifically for law firms navigating MTD for VAT and other digital reporting requirements. Our team works with Xero, QuickBooks, and bridging software to ensure your firm meets HMRC's standards.

For a broader overview of how digital reporting affects your firm, read our SRA Accounts Rules essentials guide which covers record-keeping requirements that overlap with MTD for VAT.

Final Thoughts

MTD for VAT is not going away. HMRC plans to extend Making Tax Digital to income tax from April 2026 for self-employed individuals with income over £50,000, and from April 2027 for those over £30,000. For law firm partners, this means digital record-keeping will soon apply to their personal tax affairs as well.

The best approach is to treat MTD for VAT as an opportunity to improve your firm's financial controls. Digital records reduce errors, save time, and provide better data for decision-making. The upfront cost of software and training is small compared to the long-term benefits of compliance.

If you are unsure whether your current setup is compliant, speak to a legal-sector-specialist accountant. We can review your VAT processes, recommend software, and help you implement MTD for VAT in your law firm. Contact us for a free firm health check to assess your MTD readiness.