SimpleTaxFlow Help Centre

Making Tax Digital guides, from your first update to your tax return.

Step-by-step guides for sole traders and landlords using SimpleTaxFlow: get your figures in from a spreadsheet or Bookkeeping, send each quarterly update to HMRC and submit your tax return at the end of the year.

The regular MTD workflow

  1. 1

    Connect HMRC

    Sign up for Making Tax Digital with HMRC, then connect your HMRC account.

  2. 2

    Get your figures in

    Import your spreadsheet totals for the tax year so far, or add income and expenses in Bookkeeping.

  3. 3

    Check

    Choose Simple or Detailed expenses, then check the figures HMRC will receive.

  4. 4

    Send

    Send each quarterly update by HMRC’s deadline and see HMRC’s calculation.

  5. 5

    Year end

    Make year-end adjustments, add other income and submit your tax return.

Browse by task

Guides for the work in front of you

New to Making Tax Digital? Start here

22 guides across SimpleTaxFlow

Daily bookkeeping

2 guides
Compliance guide12 min read

MTD expense categories explained

What goes in each Making Tax Digital income and expense category for self-employment and UK property, what does not, with an example and HMRC’s guidance for each.

Workflow guide6 min read

How to add income and expenses for Making Tax Digital

Add income and expenses for Making Tax Digital for free in Bookkeeping, one at a time or several at once. They feed your quarterly update.

Quarterly filing

8 guides
Workflow guide5 min read

Import your spreadsheet figures for a quarterly update

Send an MTD quarterly update from your spreadsheet. Upload a CSV of your tax year so far, check the figures and carry on in Bookkeeping.

Compliance guide5 min read

Does a spreadsheet count as a digital record for MTD?

Spreadsheets count as digital records for Making Tax Digital when used with bridging software. Excel, Google Sheets and digital links explained.

Workflow guide5 min read

How to fill in the MTD spreadsheet template

MTD spreadsheet template: download it from your quarterly update, link each line to your spreadsheet records with a formula, save as CSV and upload it.

Compliance guide6 min read

MTD spreadsheet template lines explained

Every line in the MTD spreadsheet template for self-employment and UK property, what it means, and which lines Simple and Detailed use.

Compliance guide5 min read

Simple or detailed expenses for MTD: the £90,000 rule

Consolidated expenses for MTD: under £90,000 turnover send one expenses total. At £90,000 or more, split expenses into HMRC categories.

Workflow guide5 min read

Send quarterly updates for jointly owned UK property from your own account

How joint owners send MTD quarterly updates for UK property from a spreadsheet, which figures each owner uploads and what each filing plan costs.

Compliance guide6 min read

How to send an MTD quarterly update to HMRC

Check your figures for the tax year so far, confirm them and send your Making Tax Digital quarterly update from Tax.

Compliance guide5 min read

How to correct an MTD quarterly update you already sent

Fix a mistake after sending a quarterly update, send corrected figures for the tax year so far and find your receipts in Tax.

VAT filing

2 guides
Getting started7 min read

Set up VAT and connect HMRC

Check VAT availability, business and record prerequisites, plan access and the separate VAT HMRC connection in SimpleTaxFlow.

Compliance guide8 min read

Prepare and submit a VAT return

Review VAT records, empty-period coverage, nine boxes, adjustments and warnings, then make an explicit declaration and retain the receipt in the enabled preview.

Year end & tax

9 guides
Compliance guide7 min read

Your MTD year: updates, tax return and payments

Find each business update, your annual tax return and the separate payment calendar in Tax.

Compliance guide6 min read

Annual allowances and adjustments in MTD explained

What capital allowances and annual adjustments are under Making Tax Digital, when you need them and where to add them.

Compliance guide6 min read

How to correct a submitted MTD tax return

Change your Making Tax Digital tax return after you submit it, within 12 months of the 31 January deadline.

Compliance guide6 min read

How to record CIS deductions in your MTD tax return

Add the CIS tax contractors took from your pay, so HMRC counts it in your Making Tax Digital tax return.

Compliance guide6 min read

How to submit your MTD tax return

Check HMRC’s calculation, confirm the declaration and submit your Making Tax Digital tax return in SimpleTaxFlow.

Compliance guide6 min read

How to make year-end adjustments in MTD

Add annual allowances and adjust HMRC’s business summary before you submit your Making Tax Digital tax return.

Compliance guide6 min read

How to add employment, savings and dividends to your MTD tax return

Add PAYE employment, UK savings interest and UK or foreign dividends to your Making Tax Digital tax return.

Compliance guide6 min read

How to claim a loss in MTD

Record losses brought forward and make loss claims for self-employment and UK property in your Making Tax Digital software.

Compliance guide5 min read

Your MTD tax calculation: HMRC’s figure, our estimate and payment dates

What HMRC’s in-year tax calculation shows, how the SimpleTaxFlow estimate differs and when Self Assessment tax is usually paid.

Account & access

1 guide
Compliance guide7 min read

Review your HMRC businesses and reporting settings

Check business sources, accounting periods, quarterly cadence, and accounting method before relying on filing dates.

Ready to put the guidance into practice?

£30.00 + VAT a year or £3.50 + VAT a month. Bookkeeping is free. Pay when you send to HMRC.