ArcTax connects directly to HMRC so sole traders, landlords, and agents can submit quarterly updates, track obligations, and file Final Declarations — without the complexity.
No credit card required · Cancel any time
April 2026
Mandatory for £50k+ earners
4×/year
Quarterly submissions required
HMRC API
Official direct submission
From £10/mo
Cancel any time
The HMRC mandate
From April 2026, HMRC requires sole traders and landlords earning over £50,000 to submit quarterly digital updates. Penalties apply for non-compliance. ArcTax makes it straightforward.
April 2026
£50,000+ earners mandated
April 2027
£30,000+ earners mandated
April 2028
£20,000+ earners mandated
Create your ArcTax account, enter your NINO, and connect to HMRC Government Gateway in minutes.
Enter income and expenses each quarter — or upload a CSV from your spreadsheet. We handle the HMRC API.
Review your tax calculation, confirm your declaration, and crystallise with a single click.
Built specifically for Making Tax Digital — not a generic accounting tool bolted on.
Fully compliant with MTD ITSA. Connects directly to HMRC — no third-party intermediaries.
Keep your existing spreadsheets. Upload a CSV and we convert it into an HMRC-compliant submission.
Accountants can manage multiple clients, view obligations, and submit on their behalf from one dashboard.
Every submission stored with a full audit trail — payloads, HMRC references, and status for every period filed.
See all open obligations and upcoming due dates at a glance. Never miss a quarterly deadline again.
Encrypted in transit and at rest. HMRC OAuth 2.0 flow — ArcTax never sees your Government Gateway password.
Already tracking income in Excel? Upload a CSV and ArcTax converts it into an HMRC-compliant quarterly update automatically. No need to change how you work.
Try bridging importYour CSV
No hidden fees. No long-term contracts. Cancel any time.
For sole traders and landlords filing their own MTD returns.
For accountants and agents managing multiple clients.
Free to sign up and connect · Billing starts only when you submit
MTD ITSA requires self-employed individuals and landlords with income over £50,000 to keep digital records and send quarterly updates to HMRC, replacing the annual Self Assessment tax return.
No. Our bridging import lets you upload a CSV from any spreadsheet and converts it into an HMRC-compliant quarterly submission automatically.
Yes. Your accountant can use the Agent Portal to manage your filings on your behalf, or you can share access to your workspace.
ArcTax supports self-employment, UK property (FHL and non-FHL), foreign property income, savings & interest, and dividends — covering the full MTD ITSA scope.
Yes. ArcTax connects directly to HMRC's MTD APIs using the official OAuth 2.0 authorisation flow.
Yes — you can sign up and connect to HMRC immediately at no cost. Billing only starts when you're ready to submit.
Join sole traders, landlords, and agents using ArcTax to file directly with HMRC — simply and compliantly.