Infinity: the Swiss AI bookkeeper, feature by feature, and what it leaves to us

17.1What Infinity is

NextBusiness AG was registered in September 2023 by a group of students who had been building since 2020; the product reached the market in spring 2023 and was renamed and redesigned into “the new Infinity” in December 2024. Stefan Wittwer is chief executive, Raksmey Oum runs growth and takes every demo call himself; the team page lists ten people. On 30 June 2026 it announced a first round of USD 3 million led by EquityPitcher Ventures with Tenity and Backbone Ventures, to be spent on engineering in Zurich, with the stated aim that “by 2030 company accounting should run practically autonomously”. It publishes no customer count; it said in July 2025 that paid users had quintupled in a year. It is certified Swiss Made Software, hosts in Zurich, connected to SIX bLink in 2024, and holds registered marks on Infinity and Live Accounting.

Its stated competitor is bexio, the market leader with over a hundred thousand customers, against which it runs a comparison page, a blog post and a migration guide. Its pitch is three sentences long: connect the bank and the bookings propose themselves; photograph the receipt and the entry is prepared; a founder with no accounting knowledge can do this. Everything else on the site — the projects module, the payroll add-on, the trustee programme — is there so that the founder does not have to leave when the business grows to five people.

Three things in the plate matter for us. The only metered quantities are receipts through the extractor, users and AI rules: nothing is counted by transactions, documents, bank accounts or storage, which is the pricing shape chapter 10 argued for. The Start plan has no VAT return at all — it is for the flat-rate (Saldosteuersatz) filer, who computes the liability by hand from the income statement, because the product has no net-tax-rate form even on the top plan. And two users are free on every plan “so you can invite your accountant”, with the trustee side handled by a separate volume-licence price list on request.

17.2The features, and where we stand

Fifty-six features, grouped the way their own features page groups them, then marked. have we do it today, in SQL-Ledger 3.2.12, in the panel, or in a companion app on ledger123.com; partial the substance exists but not the form; build we lack it and want it; skip we lack it and do not want it. “RMA” is the bookkeeping cockpit of chapter 15, section 7, now running at rma.ledger123.com against the same dataset as the ledger.

17.3What Infinity does not do

The reverse list is long and, unusually, largely written by the vendor. The help centre and FAQ say plainly: no dunning; no credit-note document; no partial invoice; invoices in francs only until April 2026 and QR-bills in francs and euros only; foreign-currency accounts only among liquid assets; no net-tax-rate form; account numbers cannot be renamed; no Android; payroll not for staff leasing; the archive is a partner. Beyond what they admit, the product has no inventory, no purchase or sales orders, no delivery notes, no assemblies, no warehouses, no point of sale, no storefront, no cost centres or departments, no fixed-asset register, no budgets, no consolidation across companies, no batch printing, no vouchers or approval batches, no SSO, no webhooks, no on-premise option and no source. Its target is “up to about five employees” and it says so in the file it writes for language models. A user who reaches six employees, a second warehouse, a second country or a second currency for the bank account has to leave, and the migration guide they publish is for arriving from bexio, not for departing to it.

That is the sale. The product a founder starts on because it asks nothing of them is the product they leave in year three, and the leaving is painful because there is no order, stock or cost history to take. Chapter 5 section 8 counted forty-five SQL-Ledger rows no QuickBooks tier has; against Infinity the count is higher, because Infinity has deliberately built less. Section 17.5 says how to use that.

17.4What the changelog says

Ninety-nine English entries in twenty-two months, none versioned, is a team that ships every few days and tells its users each time. Read in order they show where the money goes. The first year after the December 2024 redesign was spent on the bank feed: chronological review, split lines, multi-file camt import, recovery of ignored lines, a rebuilt reconciliation in October 2025, duplicate avoidance, then the “own instructions” in December that turned the proposals from a classifier into something the user can talk to. The second theme is the document: PDF reports, formatted invoices with custom columns, mail-in upload, e-mail status, multilingual documents, then foreign-currency invoices only in April 2026 and foreign-currency accounts in May. The third is the firm: Client Center in July 2025, roles in March 2026, the trustee account in April. The API arrived in December 2025 with contacts and bookings, and grew invoices and estimates in May 2026. Payroll entries begin in April 2026. Excel export took until February 2026; Ctrl-K search until the same month.

Two inferences. First, the things they built last are the things a five-person firm asks for and a freelancer never does — roles, Excel, foreign accounts, the API — so the pressure from customers who have grown is real and they are responding to it with features rather than by letting those customers go. Second, nothing in twenty-two months touches stock, orders, cost centres or assets; the boundary of the product is a decision, and the USD 3 million is for the agent, not for an ERP. Our window against them is therefore not a race: they will not arrive where we are, and we should not try to arrive where they are, except in the three places in section 17.6.

17.5Who comes from Infinity, and what they expect

Not the freelancer; Infinity serves them well and cheaply and we should not pretend otherwise. Three kinds of user do arrive. The firm that has grown past what it handles — stock, a second entity, a foreign bank account, someone who needs an order before an invoice. The trustee who has a mix of clients and does not want two systems, one for the small ones and one for the rest, when the volume-licence price list they asked for turns out to be per mandate. And the technical owner who wants the database, a self-hostable option, or an API without a thousand-an-hour ceiling. Each has been trained by Infinity to expect certain things on the first morning.

17.6What to build

1The bank connection

SIX bLink is the Swiss aggregator, and Infinity’s whole product sits on it. Chapter 6 item 3 costed aggregators and chapter 13 put a live feed in the third wave because of the minimums. Infinity changes the arithmetic for Swiss tenants only: a bLink connection is one contract, one bank standard, and the tenants who want it are exactly the ones who will pay a Swiss price for it. Build it as a source for RMA A — the same import table, the same matcher, the same deduplication, with the file upload replaced by a nightly pull and a payment push for RMA B — and sell it as an add-on at cost plus margin, which is what they do not have to do because they have raised money. Two-factor login, chapter 16 item 3, is a precondition, as it is for them.

Touches: rma/rma.pl banking module, a bLink client, the panel for the add-on. Effort: medium, plus the contract.

2Extraction beyond the QR block, and a mail-in address

Chapter 9 item 2, made concrete by their quota: 75, 250 or 450 receipts a year, then 35 centimes each. RMA G already does the Swiss half without a model, because a QR-bill is structured; the foreign receipt, the till slip and the card statement need a vision model, and the honest design is theirs — extract, show the confidence, let the user confirm, count it. Give each tenant an inbox address so receipts can be forwarded, with the same duplicate hash, and price the extraction per document above a free allowance rather than folding it into the plan.

Touches: rma/rma.pl inbox, a model call, a mail receiver, the panel for the allowance. Effort: medium.

3Quote acceptance and invoice links

A public, unguessable URL per quotation and per invoice, rendered from the document’s own template, with Accept and Decline on the quotation and the PDF and the QR payment part on the invoice; acceptance stamps the quotation, notifies the seller, and can convert it to an order. This is the customer half of chapter 14’s portal, cut down to one page and no login. White-label is the default, because the mail already comes from the tenant.

Touches: a route in the appserver, SL/OE.pm status, the e-mail templates. Effort: small.

4A phone home screen, not an app

They ship an iPhone app for five tasks: scan, swipe, balances, timer, contacts. All five are web pages on a phone; RMA’s expense capture already is one. Build a phone-first entry point at the same address — capture a receipt with the camera, confirm or reassign the next proposed booking, see bank balances, start a timecard — and let it install to the home screen. Do not build native apps; an Android version they have not shipped in three years is a hint about the cost.

Touches: rma/rma.pl, a manifest, four screens. Effort: small.

5The practice console, with a Swiss import batch

Chapter 13 module 1, unchanged in scope, with two additions Infinity makes obvious: the client list shows the count of unreviewed bank lines and the date of the last document, because that is what a trustee looks at each morning; and an import batch that takes the three Infinity exports — contacts, chart, opening balances — for many clients at once. Staff seats across all clients at no charge up to a number, then a price, is the right shape and the one they chose.

Touches: the panel, SL/Members.pm, the importers. Effort: medium.

6A dashboard the ledger opens on

Solvency (bank and receivables against payables and the next VAT payment), the month’s income and expense against the same month a year ago, the four largest expense groups with a drill-down to the account sheet, open invoices by age, and the RMA counts — unreviewed bank lines, inbox documents, open questions. Every number links to the report that explains it. RMA K has the widget frame; the ledger’s home frame is the place to show it.

Touches: bin/mozilla/menu.pl home frame, SL/RP.pm, RMA K. Effort: small.

7Time to invoice in one step

From the timecard list: select a customer and a range, choose detailed lines, totals per project or one line, and generate the sales invoice with the service dates as a column. Everything under it exists; the missing thing is the button.

Touches: bin/mozilla/jc.pl, SL/JC.pm, SL/IS.pm. Effort: small.

8One search box

Ctrl-K: a customer, a vendor, an invoice number, an amount, a part, an account, a menu entry, with the result opening the record. Postgres full-text over the six tables is enough. Add prior-period columns to the income statement and balance sheet while in the report code, since chapter 13 module 12 wants them and Infinity has them.

Touches: bin/mozilla/menu.pl, a search action, SL/RP.pm. Effort: small.

9The free QR-bill page

Once chapter 15 item 2 has shipped the QR port, put it on ledger123.com without a login: fill in payee, payer, amount, reference, download the PDF. It is their top-of-funnel tool and it costs an afternoon; it also gives the marketing plan of chapter 10 a Swiss keyword it does not have.

Touches: web/website.pl, the QR module. Effort: small.

10Swiss payroll through a partner

Not a Swissdec certification — that is a year and a specialist — but what Infinity did: a certified partner behind our screens, ELM transmission through them, the postings coming back into HR. Preload the Swiss wage types and deductions in HR so that a tenant who does not take the partner still has a correct payslip. Chapter 13 module 10 is the US analogue.

Touches: SL/HR.pm, bin/mozilla/hr.pl, a partner contract. Effort: medium, most of it commercial.

17.7What not to take

The visual editor. Editing the invoice as it will look is the right experience for someone who will never open a template, and the wrong one for someone who wants a second page, a delivery-note variant or a language: our templates are the reason documents in forty languages cost nothing. A gallery of good templates does the work of the editor for nine users in ten. The plus-and-minus ledger: it hides the thing an accountant needs to see and we already offer both. The receipt quota as a plan tier: meter the extraction, not the plan. Native apps, for the reason in item 4. The referral programme and the marketplace, per chapter 10. And the boundary itself: we should never say “up to five employees” about anything, because it is the one sentence on their site that sends customers to us.

17.8Glossary

17.9Sources