Making Tax Digital for Partnerships 2026: What Every Partner Needs to Know

How MTD Affects Partnerships (It's Complicated)

Making Tax Digital for Income Tax is fundamentally designed around individuals, not business entities. This creates an unusual situation for partnerships where the tax obligation has traditionally been split between the partnership return (SA800, filed by the nominated partner) and individual partner returns (SA100 with SA104 supplement).

Here's what HMRC has decided:

• Individual partners who exceed the income threshold must comply with MTD from April 2026 (£50k+) or April 2027 (£30k+)
• The partnership entity itself — specifically the SA800 return — will not be brought into MTD until a later date (currently expected no earlier than April 2028)
• Not all partners in the same partnership will necessarily be affected at the same time — it depends on each partner's individual total qualifying income

This creates a genuinely awkward transition period where some partners in a firm are submitting quarterly digital updates to HMRC while others continue with the old annual system.

Why This Matters

In a typical two-person partnership where both partners share profits equally, if the partnership earns £120,000 gross, each partner's share is £60,000 — both above the £50,000 threshold and both mandated from April 2026.

But consider a partnership with unequal profit sharing: one partner takes 70% (£84,000) and another takes 30% (£36,000). The first partner is mandated from April 2026, the second from April 2027 when the threshold drops to £30,000.

And in a three-person partnership earning £100,000 with equal shares, each partner receives £33,333 — none of them are mandated until April 2027.

The threshold applies to gross qualifying income before expenses, which catches more people than you might expect.

Individual Partner Obligations

If you're an individual partner whose qualifying income exceeds the threshold, here's exactly what MTD requires of you:

Quarterly Updates

You must submit summary information about your share of partnership income and expenses to HMRC every quarter, using MTD-compatible software. The quarterly periods follow the tax year:

End of Period Statement (EOPS)

After the tax year ends, you submit a finalised summary of your partnership income and expenses. This replaces part of what would have been on your Self-Assessment return.

Final Declaration

By 31 January following the tax year, you submit a final declaration confirming all income sources (replacing the Self-Assessment tax return for MTD-mandated income). This is where you bring together your partnership income with any other income sources.

What Stays the Same

The partnership's SA800 return still needs to be filed as usual (by 31 January for online filing). The nominated partner still files this. MTD doesn't replace the SA800 — yet.

Calculating Your Qualifying Income as a Partner

This is where many partners get confused. Your qualifying income for the MTD threshold isn't just your partnership share — it's the total of:

• Your share of partnership gross income (before partnership expenses are deducted)
• Plus any self-employment income you earn outside the partnership
• Plus any property income (rental income) you receive personally

Not included in the threshold calculation:

• Employment income (PAYE salary)
• Dividend income
• Savings interest
• Pension income
• Capital gains

Example Calculations

Scenario 1: Partnership only

You're in a 50/50 partnership. The partnership's gross income is £130,000. Your share is £65,000. You have no other self-employment or property income.

Qualifying income: £65,000 → Mandated from April 2026.

Scenario 2: Partnership plus freelancing

Your share of partnership gross income is £35,000. You also do freelance consulting earning £20,000 gross.

Qualifying income: £35,000 + £20,000 = £55,000 → Mandated from April 2026.

Scenario 3: Partnership plus rental property

Your share of partnership gross income is £40,000. You also receive £15,000 in rental income from a buy-to-let property.

Qualifying income: £40,000 + £15,000 = £55,000 → Mandated from April 2026.

Scenario 4: Below threshold

Your share of partnership gross income is £28,000. No other qualifying income.

Qualifying income: £28,000 → Not mandated until the threshold drops below your income level (possibly April 2028 for sub-£30k).

When the Partnership Entity Itself Is Brought In

HMRC has taken a phased approach to MTD, and partnerships as entities are being handled separately from individual partners:

HMRC originally planned to bring partnerships in much earlier but pushed the timeline back after consultation feedback about the complexity involved.

What "Partnership-Level MTD" Will Look Like

When partnerships are formally brought into MTD, the nominated partner will likely need to:

• Submit quarterly partnership-level income and expense summaries (replacing parts of the SA800)
• Use MTD-compatible software at the partnership level
• Maintain digital records for the partnership (not just individual partner records)

The exact requirements haven't been finalised. HMRC will publish detailed guidance before the mandate takes effect.

The Nominated Partner's Role Under MTD

Every partnership has a nominated partner — the person responsible for filing the Partnership Tax Return (SA800) and managing the partnership's tax affairs with HMRC.

During the Transition Period (2026-2028)

The nominated partner continues to file the SA800 as normal. Nothing changes at the partnership level yet. But if the nominated partner's individual qualifying income exceeds the threshold, they must also comply with MTD personally — submitting their own quarterly updates for their share of partnership income.

Practical Considerations

• Two systems running simultaneously: The partnership files its SA800 annually while individual partners submit quarterly MTD updates. This means partnership accounting data needs to be available quarterly, even though the partnership-level return is annual.
• Data sharing: Partners need timely access to their income/expense share figures every quarter. If the nominated partner or bookkeeper only prepares accounts annually, the quarterly data simply won't be available for MTD submissions.
• Software coordination: If different partners use different MTD software, they'll each need the same underlying partnership data imported into their own systems. This is a recipe for inconsistencies if not managed carefully.

Software Requirements for Partners

Each mandated partner needs their own MTD-compatible software. Here are the options:

Option 1: Full Accounting Software

Software like Xero, QuickBooks, or FreeAgent that handles everything — record-keeping, quarterly submissions, and end-of-year declarations. Most partnership-friendly because they can handle multiple income sources.

• Xero: Strong partnership features, can track individual partner allocations. From £15/month.
• QuickBooks: Good for simpler partnerships. From £12/month.
• FreeAgent: Excellent for sole traders but partnership features are more limited. From £14.50/month.

Option 2: Bridging Software

If your partnership already uses spreadsheets for bookkeeping and you don't want to switch, bridging software lets you keep your spreadsheet and just bridges the gap to HMRC's API. You maintain your records in the spreadsheet, then use the bridging software to submit quarterly.

This can be more practical for partnerships where the accounting is already well-established in spreadsheets. See our complete guide to MTD bridging software for a detailed comparison.

Option 3: HMRC's Free Software

HMRC is developing free MTD software, but it's designed for the simplest cases. It may not handle the complexity of partnership income splitting, multiple income sources, or the nuances of capital allowances that partnerships often involve.

Partnership-Specific Software Considerations

• Does the software handle partnership profit allocation? You need to correctly split income according to the partnership agreement, which may not be equal shares.
• Can it handle multiple income sources? If you have partnership income plus rental income, you need software that can report both to HMRC in the same quarterly update.
• Does it integrate with your partnership's existing accounting system? If the partnership uses Xero but you personally use QuickBooks, data transfer becomes an extra step.
• Can multiple partners use the same software licence? Some software charges per user, which can get expensive for larger partnerships.

Quarterly Reporting: What Partners Submit

Each quarter, mandated partners submit a summary of their income and expenses to HMRC. Here's what's included:

Income Categories

• Your share of partnership turnover/sales
• Any other partnership income (interest, rental income held by the partnership)

Expense Categories

Your share of partnership expenses, broken down into HMRC's standard categories:

• Cost of goods sold
• Staff costs
• Office costs (rent, rates, utilities)
• Travel costs
• Professional fees
• Marketing and advertising
• Finance charges (bank charges, loan interest)
• Depreciation and capital allowances
• Other allowable expenses

What About Personal Expenses?

If you incur expenses personally that are allowable against your partnership income (e.g., you use your own car for partnership business), these need to be included in your quarterly submission separately from the partnership's expenses. Keep these records in your own MTD software alongside your partnership share data.

The 12-Month Penalty Grace Period

Good news: HMRC has confirmed a 12-month penalty grace period for the 2026/27 tax year. This applies equally to individual partners mandated from April 2026.

What the Grace Period Covers

• No penalty points for late quarterly submissions during 2026/27
• You should still submit on time to build good habits and test your systems
• The grace period gives you a full year to get your processes right without financial consequences for late filing

What the Grace Period Does NOT Cover

• Late payment penalties still apply — interest accrues from day 1 of any late payment, with a 2% charge at day 16 and a further 2% at day 31
• Final declaration deadlines — the 31 January deadline for your final declaration is not affected by the grace period
• Deliberate non-compliance — the grace period is for teething problems, not for ignoring MTD entirely

For full details on how penalties work under MTD, see our complete guide to the MTD penalty grace period.

LLPs and Corporate Partners

Not all partnerships are treated equally under MTD:

Limited Liability Partnerships (LLPs)

LLPs are a distinct legal structure, and HMRC has not yet confirmed when they'll be formally brought into MTD at the entity level. However, individual LLP members who are taxed as self-employed and whose qualifying income exceeds the threshold may still need to comply with MTD individually.

The complexity with LLPs is that member profit shares, salaried member rules (disguised employment), and capital allocation can make it harder to determine qualifying income. If you're an LLP member, get specific advice from your accountant.

Partnerships with Corporate Partners

If your partnership includes a limited company as a partner, the partnership is excluded from the initial MTD rollout for partnership entities. The corporate partner's share of income falls under Corporation Tax (which already has its own digital reporting requirements), not Income Tax.

Individual partners in a mixed partnership (some individual, some corporate) still need to comply individually if they exceed the threshold. The partnership entity itself will be brought in later.

Scottish Partnerships

Scottish partnerships have a distinct legal personality (they're separate legal entities, unlike English/Welsh partnerships). HMRC hasn't indicated any different treatment under MTD, but the legal distinction may create nuances as the rules develop.

Practical Scenarios: Who Needs to Do What

Scenario 1: Two-Person Equal Partnership, High Income

Partnership gross income: £180,000
Split: 50/50
Each partner's share: £90,000

Result: Both partners mandated from April 2026. Both need MTD software. Both submit quarterly updates individually. Partnership still files SA800 annually as normal.

Scenario 2: Three-Person Partnership, Unequal Shares

Partnership gross income: £150,000
Split: 50% / 30% / 20%
Shares: £75,000 / £45,000 / £30,000

Result: Partner A (£75k) mandated from April 2026. Partner B (£45k) mandated from April 2027. Partner C (£30k) mandated from April 2027. Partners B and C continue with annual Self-Assessment for 2026/27.

Scenario 3: Partnership Plus Rental Income

Partnership gross income: £80,000
Split: 50/50 (£40,000 each)
Partner A also has: £15,000 rental income
Partner B also has: No other qualifying income

Result: Partner A qualifying income = £40,000 + £15,000 = £55,000 → mandated from April 2026. Partner B qualifying income = £40,000 → mandated from April 2027. Even though they're equal partners in the business, they're in different MTD waves.

Scenario 4: Husband and Wife Partnership

Partnership gross income: £70,000
Split: 60/40 (common in husband/wife partnerships)
Shares: £42,000 / £28,000

Result: Neither partner is mandated from April 2026 (both under £50k). The higher-earning partner is mandated from April 2027 (over £30k). The lower-earning partner is not mandated until the threshold drops further.

Digital Record-Keeping Requirements

MTD requires you to keep digital records of your partnership income and expenses. "Digital" doesn't mean you can't use a spreadsheet — it means the records must be stored electronically and linked to your MTD submission software.

What Records to Keep

• Your share of partnership income — broken down by type (trading income, interest, other)
• Your share of partnership expenses — categorised by HMRC's standard expense categories
• Personal expenses claimed against partnership income (e.g., use of home office, personal car mileage)
• Capital allowances — both partnership assets and personal assets used for partnership business
• Partner allocation records — documentation of the profit-sharing arrangement

Practical Tips for Partnerships

1. Agree a quarterly bookkeeping schedule. The partnership needs to close its books quarterly so individual partners can access their share figures. Build this into your partnership agreement if necessary.
2. Use the same accounting software where possible. If all partners use Xero, data sharing is seamless. If partners use different software, you'll need a reliable process for transferring quarterly data.
3. Separate personal and partnership expenses clearly. MTD submissions need both — keeping them muddled creates quarterly headaches.
4. Document your profit-sharing arrangement. If it changes (new partner, revised shares), update immediately. Your MTD software needs to know the correct allocation percentages.

Working with Your Accountant

Many partnerships rely on an accountant to handle the annual SA800 return and individual partner returns. MTD changes this dynamic significantly:

Questions to Ask Your Accountant

1. "Will you handle our quarterly MTD submissions?" — Some accountants will, but may charge extra. Others expect you to submit quarterly and they'll handle the end-of-year declaration. Clarify now.
2. "Which MTD software do you recommend for partnerships?" — Your accountant likely supports specific software packages and can integrate with them directly.
3. "How will we share partnership data quarterly?" — The accountant needs your partnership figures every quarter, not just at year-end. What's the process?
4. "What's the additional cost?" — MTD means more work for accountants. Expect fees to increase. Get quotes now so you can budget.
5. "Should we move to quarterly accounting now?" — Getting the quarterly rhythm established before April 2026 is much less stressful than starting when it's mandatory.

Agent Authorisation

If your accountant will submit MTD returns on your behalf, they need to be authorised as your agent in HMRC's MTD system. This is a separate authorisation from the existing Self-Assessment agent authorisation. Make sure your accountant sets this up before April 2026.

5-Week Action Plan for Partners

Whether you're mandated from April 2026 or preparing for April 2027, here's how to get ready:

Use our free MTD Readiness Checker to assess how prepared you are.

Frequently Asked Questions

For additional common questions, scroll up — we've included structured FAQ answers at the top of this page for quick reference. Here are a few more that are specific to partnerships:

Can the partnership buy one software licence for all partners?

It depends on the software. Some (like Xero) allow multiple users under one subscription. Others charge per user. Each mandated partner needs the ability to submit their own quarterly update to HMRC, so they either need their own login or an accountant authorised to submit on their behalf.

What if our profit-sharing changes mid-year?

You report based on the actual allocation for each quarter. If the profit-sharing ratio changes from Q2, your Q1 submissions are based on the old ratio and Q2 onwards on the new ratio. Your MTD software should allow you to update the allocation.

We use a partnership accounting year that doesn't match the tax year. What happens?

Basis period reform (which took effect from April 2024) has already moved most partnerships to a tax-year basis. If your partnership accounting year still differs, the transitional rules should have been applied. Speak to your accountant — this should already be resolved.

My partnership share fluctuates — how do I know if I'm above the threshold?

The threshold is based on the previous tax year's qualifying income. If your 2025/26 income exceeds £50,000, you're mandated from April 2026 for the 2026/27 year. If it drops below £50,000 in 2026/27, you can apply to leave MTD (but you'll need to re-join if it goes back up).

I'm a sleeping partner — do I still need MTD software?

If your share of qualifying income exceeds the threshold, yes — even if you're not involved in day-to-day operations. MTD is based on income, not activity. A sleeping partner receiving £60,000 in profit share has the same MTD obligations as an active partner.