Tool · Client onboardingModelled estimate

What does client onboarding cost your firm?

Not the compliance check. The work around it: asking for documents, chasing them, checking them and filing them. Model it for your firm, then see what changes on Letro.

10-person firm · 15 new clients a month
Today, per month
49 hrs
With Letro, per month
24 hrs
Saved per year, before Letro’s cost
£16,000

Modelled estimate from the assumptions below, not a measured customer result. Letro Cloud costs about £1,300 a year on these inputs. Private AI is in preview.

01 — The calculator

What onboarding costs you today, and on Letro

Enter your firm on the left. The comparison updates as you type.

Your firm
Letro plan
Time per onboarding (our assumptions, editable)
Today, per onboarding
With Letro, per onboarding
Cost per year
Today£32,850
£12,600 support staff + £20,250 fee-earner time
With Letro£18,144
45% less
£16,848 staff time + £1,296 Letro Cloud
  • Support staff
  • Fee-earner
  • Letro plan
  • Saved
The difference
£14,700
saved per year with Letro, after Letro’s cost
Hours back per year297
Paybackunder 1 month

Modelled estimate, not a measured result. Private AI is in preview.

Keep your result

Save it as a PDF to forward to a partner, copy a link that reopens your numbers, or have it emailed to you.

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02 — Worked example

A 10-person firm

2 partners, 4 solicitors, 2 paralegals and 2 support staff. Mixed private-client and commercial work. 15 new clients a month.

Today
£32,850
Per year

15 × 3.25 hours = 48.75 hours a month, about six working days of combined staff time. At £28 and £150 an hour, £2,737.50 a month.

On Letro (modelled)
£16,848
Per year

15 × 1.6 hours = 24 hours a month, £1,404 a month.

Back to the firm
~£16,000
and ~297 hours a year

About 25 hours and £1,300 a month, before a Letro Cloud cost of about £1,300 a year for 10 seats.

In Swiss francs

Same firm, Swiss rates (CHF 70 support, CHF 300 fee earner): CHF 72'000 a year today, CHF 36'720 modelled on Letro, about CHF 35'000 back, before CHF 1'440 a year on Cloud.

Where the hours come from

Of the 297 hours, about 234 are support-staff time and 63 are fee-earner time. We count support time at what it costs and fee-earner time at the value you set. We do not assume freed support hours turn into billable work.

03 — Private AI · In preview

Describe your onboarding once. Private AI runs it

Write the process in plain words. Private AI turns it into a workflow that requests, chases, checks and files documents inside your encrypted Letro environment. Approvals and the onboarding decision stay with a person.

Inside your boundaryRuns in an isolated environment assigned to your firm, on European infrastructure operated by Letro
Never used for trainingNot Letro’s models, not anyone’s. On any tier
Never sent to a model providerLetro runs self-hosted Mistral models itself. Mistral has no access to your data

Animation: in the Letro app, a Private AI tab appears next to Desk. A workflow is described in plain words: check each client instruction against the mandate; over CHF 50,000, Compliance and the relationship manager both approve; then confirm to the client. Private AI drafts six steps and the workflow is switched on. Results shows a new instruction awaiting approval, and History opens a past run with its full audit trail. Approvals always stay with a person. Illustrative example with fictional names.

Private AI in the Letro app, drafting and running an approval workflow. Illustrative, with fictional names
Applied to client onboarding
1 · You write

For every new client, request a passport, proof of address and source of funds. Chase every 3 days. Check each document is in date and the name matches. If anything is still missing after 10 days, tell the partner. Once the partner approves, confirm to the client and file everything to the matter.

Plain words. No forms to buildDraft workflow →
2 · Private AI drafts
  1. 01
    Request documentsPassport, proof of address and source of funds, requested in the client’s Dossier
    Private AI
  2. 02
    Chase what’s missingA reminder every 3 days until everything is in
    Private AI
  3. 03
    Check each documentIn date, legible, and the name matches the client
    Private AI
  4. 04
    Flag gapsAnything still missing after 10 days goes to the partner
    Private AI
  5. 05
    Approve the clientThe partner reviews the file and signs off
    Person
  6. 06
    Confirm and fileWelcome message to the client, documents filed to the matter
    Private AI
5 steps run by Private AI · 1 by a personReview, then switch on
Illustrative example. Private AI does not perform AML, ID or sanctions checksHow Private AI works

Run it, then argue with it

The model is deliberately simple so you can see every assumption. If your firm’s numbers are different, change them. The result is yours, not ours. If you would like to see onboarding running in a Dossier, book a demo.

The detail

How we built the model, where the time goes, and our sources

The method · Where the time goes today · What changes on Letro · What the number leaves out · Sources
Show the detailHide the detail
04 — The method

How we built the model

We did not ask firms how long onboarding takes. Most cannot say, because it is spread across inboxes, phone calls and the practice-management system. Instead we broke one onboarding into its tasks, put a time against each, and multiplied by what an hour costs.

Every input is visible and editable. If your firm is faster, the saving is smaller. If it is slower, the saving is bigger.

The model counts only the firm’s time. It does not count the client’s time, the matters that go cold while onboarding drags, or the risk of ID documents sitting in email. Those are real, and they are listed below, not in the number.

Two cost rates matter

Support and paralegal time

Salary cost

A fully loaded hourly cost: salary plus employer on-costs, divided by productive hours.

Fee-earner time

Opportunity cost

An hour spent chasing a utility bill is an hour not billed. We default below guideline hourly rates, because not every freed hour becomes a billed hour. Set it to your own realised rate.

05 — Today

Where the time goes today

One onboarding, handled by email, phone and the practice-management system.

StepWhoTimeWhat actually happens
Send the requestSupport15 minList what is needed: ID, proof of address, source-of-funds documents where relevant, engagement terms. Usually a template email
ChaseSupport45 min3 messages on average: “did you get my email”, “the bill you sent is older than three months”, “we still need the second ID”
Receive, check, fileSupport60 minOpen attachments, check dates and names, rename, save to the matter, log receipt, re-request anything wrong
Engagement letterSupport30 minSend, chase the signed copy, file it
Review and approveFee earner45 minRead the pack, answer the client’s questions, confirm the matter can open
Total3.25 hSpread over several days, most of it waiting for the client

These are defaults. A conveyancing team with a strong intake process may be faster. A private-client team handling cross-border families will be slower.

06 — On Letro

What changes, and what does not

StepOn LetroTimeWhy it changesStatus
Send the requestOne structured request in the client’s Dossier, listing every document15 minSame effort as today. The difference is where it landsLive
ChaseFollow-ups happen in the client’s own thread, where both sides can see what has arrived. Private AI can send them on the cadence you set and tell a person if anything is still missing15 minNothing is lost in an inbox or a spam folder. The chase count is our assumption, not a measurementLiveAI in preview
Receive, check, fileDocuments arrive in the Dossier, attached to the matter, with a timestamped receipt. Private AI checks dates, names and legibility, and asks for a replacement where needed25 minNo renaming, re-saving or logging. The record is the record. A person confirms the checksReceipt: liveChecks: in preview
Engagement letterSent in the channel. Delivery and opening recorded15 minNo separate chase for “did you receive it”LiveE-signature is not claimed
Review and approvePrivate AI reads the pack and flags what is missing or inconsistent. The fee earner decides25 min40 min without Private AIReading time drops. Judgement does notIn preview
Total1.6 h1.8 h without Private AI

Private AI runs in a separate environment scoped to your organisation. Nothing is sent to a model vendor, and it is not used for training. The client needs no Letro account: they receive an emailed link to a temporary room, or join with a verified PostNumber if they have one.

What does not change

We are not pretending it does

The AML and ID check itself

Your provider, your cost, your decision. Letro gets the documents to that step faster. It does not take the step.

Professional judgement

Someone still decides whether the matter opens.

The client’s own speed

A client who takes 4 days to find a passport takes 4 days.

Learning a new tool

In the first week, it adds time rather than saving it.

07 — Outside the model

What the number leaves out

Against Letro

Setup and habit change

Budget a month of lower efficiency.

Clients who refuse anything but email

Some will. The temporary room is one click, but one click is not zero.

In Letro’s favour, not counted

Matters that die during a slow onboarding

We have no reliable figure. If you track it, add it.

Where the ID documents live afterwards

Today: in email, on phones, in downloads folders. On Letro: in an encrypted Dossier with a record of who saw what. That is a risk cost, not a time cost, and it is left out of this calculator on purpose.

The record itself

When a client says “I never sent you that”, the Dossier answers in seconds. Today it can take an afternoon.

08 — Sources

Sources and assumptions

ItemValue usedSource
Guideline hourly rates, England & Wales, from 1 January 2026National 1: Grade A £295, B £247, C £201, D £142. London 1: A £579, B £393, C £305, D £210gov.uk, Solicitors’ guideline hourly rates. Checked 25 October 2026. A reference for the fee-earner input: our £150 default sits below Grade C
Support / paralegal loaded cost£28 an hour (UK), CHF 70 an hour (CH)Our assumption, not a survey figure: a salary of about £33,600 (CHF 84,000) plus 25% employer on-costs, over 1,500 productive hours a year. Use your own figure
Swiss fee-earner rateCHF 300 an hourOur assumption. Swiss rates vary widely by canton, firm and seniority. Use your own realised rate
Task timesThe two tables aboveLetro’s model, built from the task breakdown. Not a survey and not a customer measurement
Letro pricesCloud CHF 12 per seat per month. Dedicated CHF 50 per seat per month plus a CHF 500 monthly platform fee and CHF 5'000 setup, waived for founding firms. Prices exclude VATletro.com/pricing, monthly billing. Checked 25 October 2026
CHF to GBP0.90Our assumption, editable in the calculator

Letro Private AI is in preview. Letro does not perform AML, ID or sanctions checks. Figures on this page are modelled estimates, not customer results. Last reviewed 25 October 2026.