Correcting your yearly business totals (business adjustments)

The Year-end adjustments page is an advanced annual step that drives HMRC's Business Source Adjustable Summary (BSAS) for a single property or self-employment business and tax year. It triggers an HMRC calculation, then lets you submit accounting adjustments to the income and expense totals. These sit on top of the figures the app built from your records and do not change your underlying transactions.

Supported tax years

Year-end adjustments applies to supported filing years from 2026/27, subject to the existing submission and adjustment rules. Before the first supported year has ended, the page explains when it becomes available; do not select 2025/26 as a substitute.

What the Year-end adjustments page does

The Year-end adjustments page drives HMRC's BSAS (Business Source Adjustable Summary) flow for a single property or self-employment business and one tax year. It does two things:

1. It asks HMRC to calculate a summary for that source.
2. It lets you submit accounting adjustments to the income and expense totals before the year is finalised.

The adjustments sit on top of the figures the app has already built from your recorded transactions. They do not change your underlying transaction records: they are an accounting overlay sent to HMRC for that source and tax year.

This is an advanced annual step, and most people will not need to enter manual adjustments. It is also the engine behind the Confirm with HMRC button on Year-End Review: that button runs the same BSAS flow with no changes, simply to finalise a source. See Year-end and your tax return.

Note: What an adjustment means for your tax is a tax matter. The app provides the fields; whether and how to use them is between you and HMRC or your accountant.

Before you start

1. Connect your HMRC account. The Year-end adjustments page needs a connected HMRC account, so this step is required. See Connect your HMRC account.
2. Record your income and expenses first. The figures HMRC calculates come from the transactions you have recorded, so add them by hand or via CSV import before you start.
3. Send your quarterly updates first. Adjustments build on the year's figures, so the page stays locked until the year's quarterly updates are done. It shows how many are done so far and links straight to the quarterly submission page. A business that started part-way through the tax year owes fewer than four (quarters that ended before it started are not owed): if the page still asks for four once those are sent, raise a support ticket from Support in the sidebar. See Send a quarterly update.
4. Joint-property expenses held back for year end. If you chose to send your share of joint-property expenses with your year-end figures, those expenses have to reach HMRC in a final Q4 update before HMRC works out your UK property figures. When a step is about to send them for you, it says so first, with the amount. If you're not sure they have reached HMRC, contact support before you confirm your figures or submit your tax return.

Note: The Year-end adjustments page is available on both Free and MTD Lite, for property and self-employment alike. You just need a connected HMRC account.

Run the 4-step wizard

The Year-end adjustments page is a four-step wizard: Review, Calculate, Adjust, Submit.

1. Open Year-end adjustments from the tax section of the sidebar (either directly or inside More tax tools), or go to /tax/adjustments.
2. Choose the business and tax year. If your account has both income types, the sidebar's SE view opens self-employment; Property or All defaults to property. A link to a specific business, including from Year-End Review, opens that source instead. You can change the business type using the page switch. Choose the completed tax year you want to adjust.
3. Review. Step through Review to see the source and year you are working on.
4. Calculate. Move to Calculate to trigger or retrieve the HMRC BSAS summary for that source. This asks HMRC to produce the figures you will adjust.
5. Adjust. On the Adjust step, enter adjustment values only for the income and expense fields you need to change. Leave the rest blank. Negative values are allowed where a downward adjustment is needed.
6. Submit. Confirm and Submit the adjustment to HMRC.

Tip: Use the Sent to HMRC back button to return to your submission history at any point.

If HMRC already holds adjustments

HMRC keeps one set of adjustments for each business and tax year. It accepts one set per calculation, and each new set replaces the one it uses. Adjustments can come from the app, an agent or other software.

• The calculation you selected already has adjustments. You cannot add a second set to it, so the page says This calculation already has adjustments and you cannot move on. To change them, start a new calculation with New Calculation and send them on that. For self-employment, the page lists only the selected business's calculations, so choose the business first. If it says We could not load your self-employment businesses, reload the page.
• If the page shows Adjustments HMRC holds. These are the figures HMRC uses now, with the date HMRC accepted them. On a calculation without adjustments the form starts from them, because what you send replaces them, so change only what you need to. If the form has no field for any of them, it starts empty and says so. To confirm with no changes instead, clear the form first: the confirm step then says that this replaces the adjustments HMRC holds with none.
• Figures the form has no field for. A figure in that list marked Sent back as HMRC holds it (a self-employment disallowable amount) goes back unchanged with your send. A figure marked The app cannot send this figure is removed by your send, and the confirm step names it before you send.
• If the page shows Adjustments sent on this calculation. The calculation you selected has adjustments that HMRC does not use now: adjustments sent since replaced them, or an update sent after them made them invalid. To use them, enter them again when you send adjustments on a new calculation. A figure marked The form has no field for this figure cannot be sent from the app.
• The page says it is out of date and sending adjustments is paused. Reload the page, then select the calculation again.

Property: finance costs are excluded

For a property business, BSAS deliberately leaves out residential finance cost (mortgage interest). There is no field for it here, and you cannot adjust it on this page. Finance costs are handled through your quarterly updates instead, not through BSAS.

If you need to change a finance-cost figure, record the mortgage-interest transactions and let them flow into your cumulative quarterly updates. See Section 24 and finance costs.

How this fits with year-end

HMRC requires every business source to be finalised before you submit your tax return. Submitting your annual figures alone does not finalise a source, so HMRC may still report that a source needs final confirmation.

There are two ways to finalise:

• No changes needed: use Confirm with HMRC on the business's row under Your income sources in Year-end and your tax return. That runs the same BSAS flow with zero adjustments.
• You have figures to change: open Year-end adjustments and submit the real adjustments, which finalises the source the same way.

2025/26 calendar quarters: if a business used calendar quarters for 2025/26, its last quarterly update ended on 31 March 2026, so any income or expenses dated 1 to 5 April 2026 are not in an update. Add them here as adjustments for 2025/26 before you confirm that business with HMRC.

For property data that is annual-only (adjustments and allowances rather than period figures), use Property annual finalisation instead. That is a separate annual submission and is the home for those fields.

If something goes wrong

• "We could not load your quarterly updates for <year>, so we cannot tell yet whether adjustments are available." The page could not read your figures for that year, usually because of a brief connection problem. Reload the page. It does not mean nothing has been sent. If it keeps happening, raise a support ticket from Support in the sidebar.
• Year-end adjustments is not in the menu. It is hidden until your HMRC account is connected, and it may sit inside More tax tools rather than directly in the sidebar. Connect HMRC, then it appears. See Connect your HMRC account.
• "We couldn’t access your … details at HMRC". HMRC refused access for the selected income type. This does not prove that your business is unregistered. Check your HMRC connection and National Insurance number in Settings. If you connected before signing up for Making Tax Digital, use Reconnect. Follow HMRC sign-up guidance if you have not already signed up. An empty obligations list on its own does not produce this notice.
• Year-end still says a source needs final confirmation (HMRC error C95005). The annual figures alone do not finalise the source. Click Confirm with HMRC on that source's Step 2 row, or enter your real adjustments here in Year-end adjustments. See Year-end and your tax return.
• "...so we could not confirm whether HMRC received them, and we stopped before going any further." Before calculating your tax return, confirming UK property with HMRC, working out Year-end adjustments or recalculating an amendment, the app first sends any joint-property expenses you deferred to year end. HMRC's answer to that send never came back, so the step you pressed did not run. Wait a few minutes, then press the same button again: if the app has HMRC's confirmation that the expenses arrived, it carries on; otherwise it sends them again, which is safe because each update replaces the year-to-date figures. If it says "A UK property update you sent hasn't been confirmed by HMRC yet", wait a little longer; if that still shows after 15 minutes, raise a support ticket from Support in the sidebar. If you had already confirmed UK property with HMRC, sending these expenses cancels that confirmation: confirm UK property again on your Year-End Review (or enter your Year-end adjustments again) before you calculate your tax return or an amendment.
• "We could not read the adjustments HMRC holds for this business, so sending adjustments is paused." The rest of the message says why. If it asks you to sign in or reconnect your HMRC account, do that first. Otherwise HMRC could not be read just then, so nothing can be sent until it can: use Refresh on the page to try again. If it keeps happening, raise a support ticket from Support in the sidebar.
• "The adjustments HMRC holds for these figures have changed since this page loaded, so nothing was sent." The adjustments at HMRC changed while you had the page open, for example because an agent sent some. Nothing was sent. Reload the page, check the figures it now shows, then send.
• "We could not read the adjustments HMRC holds for these figures, so nothing was sent." The check made as you sent could not read HMRC. Nothing reached HMRC. Try again.
• "This page is out of date, so nothing was sent." The page was opened before a change to how the app sends adjustments. Nothing reached HMRC. Reload the page, then send.
• "HMRC already holds adjustments on this calculation and accepts one set per calculation, so nothing was sent." The calculation already had adjustments at HMRC, sent from this app, an agent or other software. Use New Calculation and send your adjustments on the new calculation.
• You cannot find a mortgage-interest or finance-cost field for a property. This is by design: property BSAS excludes residential finance cost. Handle it through your quarterly updates instead.
• Self-employment is not in the business picker. The picker only lists the business types on your account. If self-employment is missing, your account does not include a self-employment business. Self-employment is available as your single income type on Free, or alongside property on MTD Lite.

For anything about what an adjustment means for your tax, or whether you need one, check with HMRC or your accountant, or see the Making Tax Digital guide.

Frequently asked questions

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