Software tools for accountants

From trial balance to filing-ready iXBRL.

HappyStats prepares statutory accounts under UK GAAP or IFRS, for a single company or a group, and produces the iXBRL that Companies House and HMRC accept. It runs on your own machine, so your client data does not pass through us.

Request early access See how it works

Built by a practising UK accountant. Source code to be available: to inspect, adapt and extend.

HappyStats · Example Trading Ltd · year ended 31 March 2026

Entity

Setup

Periods

Data

Trial balance

Mappings

Accounts

Statements

Notes

Generate

Balance sheet

As at 31 March 2026 · £

Line item	2026	2025
Fixed assets
Tangible assets	184,210	162,904
Current assets
Debtors	96,433	88,120
Cash at bank and in hand	141,877	103,562
Creditors: amounts falling due within one year	(118,045)	(97,311)
Net current assets	120,265	94,371
Total assets less current liabilities	304,475	257,275
Net assets	304,475	257,275

✓ Balances to trial balance · 142 of 142 accounts mapped

The screen above is illustrative. The figures are not a real company's.

UK GAAP and IFRSFRS 101, FRS 102 including Section 1A, FRS 105, and UK-adopted IFRS

iXBRL outputFor Companies House and HMRC

Local-firstYour data does not pass through us

Built LLM-firstAn agent can drive it as directly as you can

What it does

One job, done properly.

HappyStats does the statutory accounts job a finance team in a growing company does every year, without the cost or the set-up of an enterprise platform.

Trial balance in, statements out.

Import a trial balance from any ledger, or one for each company in a group. HappyStats builds the primary statements, named as your framework names them, with the statements of changes in equity and cash flows where the entity needs them, and the disclosure notes that go with them.

Mapped to the FRC taxonomy.

Every account is mapped to an element such as core:PropertyPlantEquipment, taken from the FRC taxonomy entry point for the standard you report under, whether that is FRS 101, FRS 102 (which covers FRS 105 too) or UK-adopted IFRS.

Mappings are kept from one year to the next, so next year starts where this year finished.

Validated before you file, not after.

Every statement is checked back to the trial balance as you work, so a figure that does not reconcile is found at the mapping stage rather than by Companies House. With Arelle installed, the iXBRL is validated against the taxonomy before you file it.

Your data does not pass through us.

HappyStats runs on your own machine, and your entity details, trial balances and accounts stay in your own files. There is no statisfying account and no statisfying server in the path, so we never hold your client data.

What does leave goes where you send it: your iXBRL to the Companies House filing gateway, and your document to the Companies House validator if you turn that on. Drive HappyStats with a cloud AI model and that provider sees whatever you give it, so for client work, use a local model or check the provider's terms.

How HappyStats works

One figure, from the ledger to the filed tag.

The same four steps every year, followed here on a single number. Tangible assets of 184,210 starts as three accounts in the trial balance and ends as a tagged fact in the iXBRL that Companies House receives. Nothing in between is retyped, and every step is checked against the one before it.

Import

A trial balance from any ledger, plus last year's accounts for the comparatives. The figure arrives as three separate ledger accounts, exactly as the bookkeeping system exported them.

Trial balance	£
0050 Plant and machinery	142,700
0060 Motor vehicles	96,500
0070 Accumulated depreciation	(54,990)
Carried	184,210

Map

All three accounts take one taxonomy element, from the FRC entry point for the standard you report under. Confirm it in the first year and it is kept: next year the same codes arrive already mapped, and only the figures change.

Account	Element
0050, 0060, 0070	core:PropertyPlantEquipment

142 of 142 accounts mapped

Review

The statements and the notes are built from the mapped figures rather than retyped from them, so the face of the balance sheet and the fixed asset note carry the same number by construction.

Fixed assets	2026	2025
Tangible assets	184,210	162,904
Note 8, tangible assets	184,210	162,904

File

The tag Companies House and HMRC read. You can open the file yourself and find your own trial balance inside it, which is the whole point of the three steps above.

<ix:nonFraction
  name="core:PropertyPlantEquipment"
  contextRef="FY2026" unitRef="GBP"
  format="ixt:numcommadot" decimals="0">184,210</ix:nonFraction>

Approach

Our approach to building.

Build together, don't reinvent alone.

Accountants solving the same problem separately is wasted effort. Shared, open-core tools get better faster.

For growing businesses.

Start-ups, scale-ups and SMEs need something simpler than the platforms multinationals have the budget for.

Built LLM-first.

Every tool can be driven by an LLM as directly as by a person, with any frontier model rather than one provider.

Get in touch

Request early access.

Early access is open to finance teams in UK start-ups, scale-ups and SMEs preparing accounts under FRS 101, FRS 102, FRS 105 or UK-adopted IFRS. Tell us what you file and we will be in touch within two working days.

We use what you send only to reply to you, and we do not pass it on. Statisfying Ltd is the data controller: the privacy notice says what that means in practice.