Teslita
Free of charge

Tax-ready Fahrtenbuch and home-charging log for your Tesla.

Teslita turns your car's own telemetry into two documents you'd otherwise build by hand: a signed monthly home-charging statement, and a continuous driving log that stands up to tax-office review.

No Tesla password required EU-hosted & GDPR-compliant Home address never shared

Home charging, documented for reimbursement

Every kWh your Tesla takes at home — date, time, duration, energy added, and derived cost. Location is verified by GPS at the moment of charging, so the statement proves the electricity went into this car at this address.

  • Per-session detail, not rounded monthly totals
  • Cost derived from your actual kWh price
  • Home location verified by GPS during each session
  • Signed PDF export with hash-chained audit trail
Teslita home-charging statement sample — 12 October sessions with kWh, cost, battery percentages and an Ed25519 signature.

Built for company-car drivers who reclaim home-electricity costs from their employer.

A Fahrtenbuch that writes itself

Teslita captures every trip your Tesla makes from the car's own gear, GPS and odometer signals. Start and end address, route, kilometres, timestamp — all automatic. You classify each trip as business, private or commute with one tap.

  • Every trip, no forgotten entries
  • Continuous odometer chain (no gaps an auditor can challenge)
  • One-tap business / private / commute
  • Signed monthly export meeting §6 EStG evidentiary standard
Teslita Fahrtenbuch sample — 284 trips across six months with odometer continuity and commute / private classifications.

For company-car drivers who want to avoid Germany's 1% lump-sum tax, Denmark's gulpladebil rules, or the Netherlands' bijtelling.

Built to survive an audit

A log is only useful if whoever reviews it trusts it. Teslita is designed so your employer, accountant or tax auditor can verify the document on their own — without taking our word for it.

Hash-chained edit log

Every change to a trip or charging session is linked by cryptographic hash to the one before it. A tampered entry breaks the chain and the report fails verification.

Signed PDF exports

Every report is signed with an X.509 certificate. The signature embeds a fingerprint of the content and the moment it was exported — so you can prove the document hasn't been edited since submission.

Immutable source data

Teslita doesn't ask your Tesla how far you drove. The car streams raw odometer, GPS and gear signals to us as events, and reports are rebuilt from those raw events — not from editable totals.

Three steps, then it runs itself

Setup takes about two minutes. After that, you only touch Teslita when you want to classify a trip or download a report.

STEP 1

Connect your Tesla

Sign in through Tesla's own portal — we never see your password. Approve a virtual key in the Tesla app so your car can stream its signals to us.

STEP 2

Drive normally

Your Tesla streams gear, GPS, odometer and charging signals to Teslita automatically via Fleet Telemetry. Nothing to install, nothing to remember to start.

STEP 3

Classify and export

Tap each trip as business, private or commute — or batch-classify at month-end. Download a signed PDF for your employer, accountant or tax office.

Questions tax-conscious Tesla owners ask

Does Teslita qualify as a valid Fahrtenbuch for the German tax office?
Teslita captures every trip continuously from the car's own gear, GPS and odometer signals — the data points the German Finanzamt requires under §6 Abs. 1 Nr. 4 EStG: date, start and end address, route, kilometres, and purpose. Each exported report is cryptographically signed and every edit is entered into a hash-chained audit log, so an auditor can verify the document has not been altered since export.
Is this valid as a kørebog in Denmark or similar logs in other countries?
Yes. The Danish SKAT requirements for a kørebog — start and end address, odometer readings, purpose, date — are all captured automatically. The same structure satisfies the Dutch rittenregistratie, the Swedish körjournal and the Norwegian kjørebok. Whether your specific employer or tax office accepts any digital log is ultimately their decision, but Teslita gives you the evidence they are entitled to ask for.
Can I edit a trip after it's recorded?
Yes — you can correct a wrong classification, rename a location, or merge two trips that should have been one. Every edit is written to a hash-chained audit log together with a timestamp, so nothing is erased. That's what makes the final PDF defensible: an auditor can see both the corrected trip and the history of how it got there.
How is my data stored, and who can see it?
Your telemetry is stored in an EU-hosted database, scoped to your account. No third parties receive it. Your home address is only used to classify trips as "home ↔ away" and to separate home charging from public charging — it never appears on shared reports unless you deliberately include it.
Do I need to install anything in the car?
No. Teslita uses Tesla's official Fleet Telemetry stream. You approve a virtual key in the Tesla app once, and the car streams its signals directly to Teslita. There is no dongle, no OBD adapter, no always-on app on your phone.
Does it work with every Tesla model?
Any Tesla that supports Fleet Telemetry — which covers all current Model S, 3, X and Y vehicles. If your car can be paired with a third-party virtual key in the Tesla app, it works with Teslita.
What if I forget to classify a trip?
Nothing is lost. Unclassified trips are still recorded with all their detail; they simply wait for you. You can classify weeks' worth of trips in a single sitting, or batch-assign a default to anything that matches a pattern (e.g. all trips to your office address = commute).

And the rest

Useful, but not why you came here.

Charging cost analytics

Monthly and annual breakdowns of home, Supercharger and other public charging — with the real cost per kWh.

Supercharger invoice archive

Teslita fetches and stores your original Tesla Supercharger invoices so you keep them even if Tesla archives them.

Live trip map

See every drive plotted on a map, with start and end addresses, duration and energy used.

Multi-vehicle

One account, any number of Teslas. Reports can be filtered or combined by car.

15 languages

Interface available in English, German, Danish, Dutch, French, Italian, Norwegian, Spanish, Swedish, Portuguese, Finnish, Polish, Chinese, Japanese and Korean.

Saved drivers & destinations

Autocomplete for frequent passengers, clients and destinations so classifying trips takes seconds, not minutes.

Start your Fahrtenbuch today. Free of charge.

Connect your Tesla in two minutes. Your first month of trips and charging sessions will be ready to export as soon as they're logged.

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