UK HMRC Self Assessment (SA103) Expense & Mileage App — Keel App Store Page

App Store Edition · UK Self Assessment SA103 · United Kingdom (HMRC · 6 Apr – 5 Apr Tax Year · SA103S / SA103F)

Stay ready for 31 January HMRC Self Assessment all year on your iPhone.

Do not leave your HMRC Self Assessment until the last week of January. Keel organises your 6 April – 5 April UK tax year as you work—keeping every GBP invoice, allowable expense receipt and 45p/25p business journey neatly categorised for SA103S and SA103F. Free to download on the App Store.

Download on theApp Store  Open UK Tax Workspace (5 Free Saves) →
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Free to download · No bank connection · App Store Custom Product Page matched

Free general contractor invoice maker

Fill it in, then download a PDF. Nothing you type leaves this page. No signup.

From
Bill to
Line items (up to 5 on web)

Your business name

Invoice

INV-0001

Bill to

Client name

DescriptionQtyUnitRateAmount
Laborhours
Materialsflat
Equipment rentaldays
Permits and inspection feesflat
Subcontracted workflat

Subtotal0.00

Tax (0%)0.00

Total0.00

✓ Verified Itemized Record · Statutory Tax & Audit Format

Issued with Keel — Free Private iPhone Invoicing (App Store) · Retain this copy for statutory tax, payment, and warranty substantiation.

QR code: Keel on the App Store
 Step 1 · Save & Export PDF (5 Free Saves)

Save your invoice in Keel iCloud Workspace & download PDF

Sign in with your Apple ID in 1 tap to save this invoice to your 5 free iCloud records, export a clean PDF, and open it on your iPhone for unlimited invoicing.

 Open in Keel on App Store (Free) → Free on iPhone ($0/mo) · Or 5 free saves in iCloud Workspace

Step 2 · Want unlimited invoices, saved clients & payment tracking? Open your iCloud Workspace on iPhone below.

Official App Store Custom Product Page · UK Self Assessment SA103

What you see on the App Store.

Turn your 6 Apr – 5 Apr UK tax year into a 5-folder All-in-One Pack: HMRC SA103S/SA103F, 9-Box MTD VAT, 45p/25p mileage, Income Proof PDF & Receipt Vault.

Open this App Store page
Keel UK Self Assessment SA103 App Store preview
Turn your 6 April – 5 April UK tax year into organised SA103 supporting records.
Keel Today screen with Up Next and job recaps
Today screen: Up Next, job recaps and the one-line dock.
Keel quote to invoice screen
Quote on site, then turn the accepted estimate into the invoice.
Keel on-device receipt OCR screen
Scan receipts on-device; each cost lands on its job.
Keel one-line mileage logbook screen
Log trips in one line, tied to the job you drove for.
Keel All-in-One Complete Pack and Lifetime purchase screen
Pay once for the official records: the All-in-One Pack per period, or Keel Lifetime.

United Kingdom · HMRC Self Assessment & SA103 Records

Organised for the 6 April – 5 April UK tax year and SA103 boxes

Instead of sorting 12 months of bank statements in January, log your invoices, receipts and miles in seconds as they happen.

SA103S & SA103F category mapping

Keep turnover, cost of goods, car/van travel, premises, admin and professional costs clearly separated.

HMRC 45p/25p simplified mileage

Automatic 10,000-mile threshold tracking for simplified vehicle expenses.

Photographic receipt proof

On-device AI OCR attaches every receipt image to its expense record.

Who this edition is built for

  • UK sole traders and self-employed freelancers preparing HMRC Self Assessment (SA100 + SA103S Short or SA103F Full).
  • People who want their allowable expenses, receipt evidence and simplified mileage ready for 31 January without paying monthly for cloud accounting.
  • Newly self-employed UK sole traders in their first 6 April – 5 April tax year.

The frustrations this edition solves.

Built for solo operators, first-time business owners and 1–5 person crews.

  • The 31 January panic Spending dark January weekends hunting through emails and van gloveboxes for April-to-April receipts.
  • SA103 box confusion Wondering which expenses belong in Goods for Resale (Box 10), Car/Van Travel (Box 12) or Phone/Stationery (Box 16).
  • Overpaying Income Tax & Class 4 NI Forgetting to claim legitimate tools, mileage and working-from-home expenses because you lost the proof.
  • Paying £300+/year for software Paying every month for bloated cloud software when you only file Self Assessment once a year.

Included in Keel on the App Store.

Free to download on the App Store.

Receipts

Keep receipts

Photograph a receipt while it is still in your hand and file it against the customer or the job.

Expenses

Track expenses

Every expense recorded with its category and its receipt, under the job it belongs to — so you can see what each job cost.

Mileage

Track business mileage

Record business trips as you go, and keep the mileage log with the rest of your records.

Invoices

Invoice the customer

Clean PDF invoices with taxes, discounts and payment terms, sent by email, Messages or WhatsApp. Add a payment QR code; line items you have used before are suggested, priced from your own history.

5-Folder Pack5-Folder Pack

Hand your accountant the year

At filing time, Keel compiles your 5-Folder Statutory Pack — supporting worksheets, mileage logs, income proof, job profitability, and accountant CSVs — built from the books you already keep.

Jobs

Keep every job together

Every expense and invoice is a step of a job, and all of it is kept with that job — so you can see what a job cost and what you billed.

Frequently asked questions.

Does Keel submit my return directly to HMRC?
Keel keeps your invoices, receipts, allowable expenses and 45p/25p mileage organised as supporting worksheets and records so you or your accountant can complete Self Assessment quickly.
Is Keel free to download in the UK App Store?
Yes. Free to download on the App Store. There is no monthly subscription and no Open Banking connection required.

Open the UK Self Assessment SA103 page on the App Store.

Free to download on the App Store. Free to download · No bank connection.

Download on theApp Store  Open UK Tax Workspace →
QR code: Keel on the App Store
Scan with iPhone camera to get Keel Send link to iPhone: Email · SMS