Track director's loan account exposure for UK solo limited companies
Catch the 35.75% s.455 trap before year-end fires
Executive Summary
In a nutshell
A continuous-monitoring SaaS for UK solo-director limited companies that watches the Director's Loan Account (DLA) balance via Xero, QuickBooks or FreeAgent, calculates exposure at the new 35.75% s.455 rate, and warns the director at 6 months, 8 months, and 9-months-minus-7-days before the tax trigger fires. Acute timing wedge: the rate jumped from 33.75% to 35.75% on 6 April 2026, every solo director's tax bill on the same balance just got 6% bigger, and nobody has bought the SEO real estate for the term yet.
The Story
Meet the user

Jamie is thirty-eight, a freelance data engineer from Guildford who incorporated Pevensey Data Ltd in 2021 because his enterprise clients refused to pay a sole trader. He runs it from a spare bedroom, draws a small director's salary, and tops it up with quarterly dividends when his accountant tells him there's profit to distribute. In between, when his boiler died in November or his car needed a clutch in March, he transferred money out of the company account thinking of it as "his money anyway, I'll square it up at year end." His accountant only sees the books once a year, in January, four months after the year-end. By the time Jamie hears the word "s.455" his loan account is eleven thousand pounds overdrawn, the 9-month-and-1-day deadline passed three weeks ago, and at the new 35.75% rate his company owes HMRC just under four grand in deposit tax he will not get back for at least eighteen months.
Then he finds DLAGuard. He connects his Xero account in two clicks. The dashboard is green. It says: balance £4,800, year-end 31 March, s.455 trigger 1 January next year, current exposure if not cleared £1,716. Three months out it starts emailing him. Six weeks out it texts him. It drafts the dividend resolution and the journal entry for him to send his accountant. The next year-end he is at zero, smiling, and the four grand stays in the company.
Scores
How does this idea stack up?
7.4/10
4.5M solo-director UK ltds. "s455 tax" 1,900/mo, "directors loan account" 1,000/mo, "overdrawn directors loan account" 390/mo, all low competition.
Forum posters describe being out of their depth, surprise four-figure tax bills, accountants who only flag it post-year-end.
Xero, QuickBooks and FreeAgent all expose public APIs with general ledger access. Trigger date math is deterministic.
Rate jumped 33.75% to 35.75% on 6 April 2026. Every "s.455" guide on the web needs rewriting. Fresh search intent window.
s.455 is statute (CTA 2010), not a passing scheme. Rate may move but the 9-month trap is permanent.
Solo Next.js + Supabase build, three OAuth integrations, standard ledger parsing. Two to three weeks to a working MVP.
Strongest
Timing
The rate change is recent, the searches will spike, and no dedicated tool has claimed the term.
Watch out
Opportunity
The headline volumes are healthy but a chunk of that traffic is informational, looking for "what is s455" rather than "give me a tool". Conversion will lean on the £10k threshold trigger and accountant-channel referrals.
Pain Point
The problem
“I feel way out of my depth and don't know where to get advice.”
— MoneySavingExpert forum, overdrawn DLA thread
The pain pattern is consistent across forums, accountancy blogs and AccountingWEB threads. Solo directors do not understand that money pulled from the company account between salary runs is a director's loan. Their bookkeeping tool records the balance, but does not warn them. Their accountant only sees it at year-end, by which point the 9-month repayment clock is already counting down. By the time the s.455 trigger fires, the company is on the hook for a refundable but capital-locking corporation tax charge of 35.75% (from 6 April 2026, up from 33.75%) of the outstanding balance.
There is a second, layered pain. If the DLA exceeds £10,000 at any point in the tax year, the whole balance becomes a Benefit in Kind, the company owes Class 1A NIC (currently 15%) on the deemed interest, and the director picks up an income tax charge. Most solo directors do not know this rule exists.
The market for "watch my DLA" is not informational. It is reactive. People search for help once the problem has shown up. The product needs to surface it before the trigger date arrives, which means continuous monitoring on connected books, not a one-off calculator.
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