Self-Employed in a Tesla: Apportioning Motor Expenses in Ireland
If you are self-employed in Ireland and use your Tesla for both business and private journeys, only the business proportion of your motor expenses and capital allowances is deductible; the private element must be added back on your Form 11. That proportion is driven by your business-versus-private mileage, so a contemporaneous logbook (date, from/to, distance in kilometres and purpose) supports your deduction and must be kept for six years.
Which Tesla costs can a sole trader deduct?
Where a car is used for both business and private purposes, Revenue allows a deduction only for the business proportion of the running costs and the capital allowances (wear and tear). For a Tesla that means the business share of electricity for charging, insurance, motor tax, servicing, repairs and the like, plus the business fraction of capital allowances on the car. The private element is not deductible and must be added back when you file. That split is normally based on your business kilometres over your total kilometres.
What the mileage log has to show
To apportion correctly you need records showing your total kilometres and your business kilometres, with each business journey logged by date, start and end location, distance in kilometres and business reason. Odometer readings support the totals. Because the split is a ratio, gaps in the record understate your business use and cost you deductions. A split overstated without evidence exposes you to add-backs, interest and penalties on a Revenue audit. All of it must be retained for six years.
Form 11, pay-and-file and why contemporaneous wins
Self-employed motor expenses are claimed through the annual Form 11 self-assessment return under pay-and-file, typically due at the end of October or mid-November via ROS. A year of mileage reconstructed the night before filing is weak evidence and error-prone. A contemporaneous log built up journey by journey gives you an accurate apportionment ratio and a record that holds up if Revenue asks to see it.
How Odoproof does the apportionment groundwork
Odoproof pulls every Tesla journey automatically and lets you tag it business or private, keeping running totals of both. At filing time you have the business-use percentage that drives your motor-expense and capital-allowance deduction, plus an exportable logbook your accountant can drop straight into your Form 11 file, with no shoebox of notes or year-end reconstruction.
FAQ
Can I deduct all my Tesla charging costs if I'm self-employed?+
Only the business proportion. If you charge for both business and private driving, you deduct the business share and add back the private element on your Form 11, based on your mileage split.
Do capital allowances on the car also need apportioning?+
Yes. Capital allowances (wear and tear) on a car used partly privately are restricted to the business proportion, and your mileage records help support that proportion.
How long do I keep my mileage records?+
Six years. Revenue can request records going back that far to support the deductions on your return.
For the self-employed, every deductible euro on your Tesla traces back to a mileage ratio you can prove. Start your 7-day free trial of Odoproof to keep that ratio accurate and your Form 11 records ready.
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