AI-assisted business planning — the adviser's quality bar

Banks, grant bodies, and Growth Hubs are about to receive a wave of business plans that look better than the ones they're used to. The prose will be tighter, the structure cleaner, the executive summaries punchier. The underlying work, however, will often be worse, because the gains in surface polish have been bought at the cost of unverified AI-generated content sliding past review.

A quality bar is overdue. Not a regulatory one — the FCA isn't going to write rules for business plans — but a market one. Lenders and funders can demand it, and advisers who meet it can use that fact to win work. Here's what it should look like.

The four-point bar

A defensible AI-assisted business plan in 2026 should satisfy four conditions. None of them is exotic. All of them are absent from most plans currently being submitted.

1. Every numerical claim is sourced. Every market size, growth rate, customer count, and price point in the plan carries a footnote pointing to where the number came from. "ONS Business Demography 2025, Table 3.2" is acceptable; "industry reports" is not. The source should be retrievable, dated, and ideally bundled with the plan as an appendix.
2. Every assumption is flagged. The financial model contains a separate, clearly labelled assumptions section. Each forecast line item traces back to one or more assumptions. A reviewer can ask "what happens if churn is 6% rather than 4%" and the model will show them, because the assumption is a single editable cell, not a number baked into a paragraph.
3. Every section is reviewed by a named adviser. The plan carries a sign-off table at the back, listing each section and the name of the adviser who reviewed it. The adviser's professional registration (ICAEW, IoD, BIBA, OISC, whatever applies) is stated. This is not ceremonial — it's the mechanism by which review becomes accountable.
4. The evidence trail is downloadable. Letters of intent, pilot results, prior accounts, market research reports, customer testimonials — all bundled as a single export. A reviewer at the bank should be able to click one link and get the plan plus everything that supports it, in a format they can audit.

These four together cost something to produce. That's the point. A plan that passes the bar is one that took a real adviser real time, and a reviewer reading it can tell.

A plan without a sign-off table and a sourced numbers list is a plan that's hoping nobody checks. In 2026, somebody is going to start checking.

Why this matters now

Two things are converging. First, the volume of plans being generated has gone up because AI has lowered the cost of producing a first draft. Second, the average quality of those plans has gone down, because the proportion produced without competent review has risen sharply.

Bank lending officers and grant panel reviewers are noticing. The early signal is qualitative — "these all read the same way" — but it will harden into something more like an explicit filter within a year or two. Plans that don't carry visible markers of human review will be deprioritised, the way CVs without specific dates are deprioritised on LinkedIn.

Advisers who can credibly say "every plan I submit meets this bar" will start to win the work that the volume players lose. The bar becomes a positioning tool as much as a quality one.

What banks and grant bodies should demand

There's a chicken-and-egg problem: advisers won't invest in meeting the bar unless lenders demand it, and lenders won't demand it until they trust the bar exists. Someone has to move first.

The reasonable first move is for banks and grant bodies to add four lines to their plan submission checklist:

• "Are all numerical claims sourced to a named, dated reference?"
• "Is there a separate assumptions section in the financial model?"
• "Is there an adviser sign-off table identifying who reviewed each section?"
• "Is supporting evidence bundled with the submission?"

None of these is onerous. All of them are answerable with a yes or no by anyone reviewing the plan in thirty seconds. The mere existence of the checklist would change adviser behaviour within a quarter.

What advisers should do regardless

Even without external pressure, advisers who care about their book of business should be moving towards the bar on their own. The reason is simple: the plans you submit are the strongest possible advertisement for your practice. A bank manager who sees three good plans from you in a year will start asking other clients to come to you. A bank manager who sees one obvious AI dump from you will stop returning your calls.

The cost of meeting the bar is real but bounded. Sourcing numbers takes longer than not sourcing them. Maintaining a sign-off table is an extra five minutes per plan. Bundling evidence is a workflow problem, not a hard one. None of this is the kind of work that ought to be a competitive moat — and yet it currently is, because so few advisers do it consistently.

A note on tooling

The bar can be met with Word, Excel, and discipline. It is, however, much easier to meet with tooling that enforces the structure — that won't let a numerical claim into the plan without a source field filled in, that won't let a section ship without an adviser sign-off, that bundles the evidence on export.

That's what BusiPlanly is built to do for UK business advisers. The quality bar is the design brief; the product is the implementation. See BusiPlanly for the overview, or contact us about the early adviser programme.