From €8,600 in backdated Modelo 210 penalties to a clean file in 90 days.
Voluntary regularisation after three years of missed non-resident declarations. Penalties reduced, file closed, quarterly filings now automated.
The client bought in 2021 with a German notary handling power-of-attorney signing. A neighbour's casual remark in the spring of 2024 sent her looking for an advisor: she had never heard of Modelo 210, never filed it, and three full years had passed since signing.
The exposure on the desk by the time we met:
| Item | Amount |
|---|---|
| Unfiled imputed-income Modelo 210, 2021–2023 (3 years) | €1,140 principal |
| Estimated late surcharges (5%–20% scaling) | €820 |
| Estimated penalties under Hacienda's standard scale (50%–150%) | €2,280–€6,840 |
| Total worst case if Hacienda contacted first | ~€8,600 |
The decision tree on day one
With unfiled non-resident tax, two doors are open. The first is to wait for Hacienda to find the file — they will, eventually, through a notary cross-check or a neighbour's denouncement, and when they do, the full penalty scale applies. The second is voluntary regularisation: file the missing returns before contact, pay the principal plus reduced surcharges, no penalty.
The choice is technical only on paper. In practice, every month that passes raises the surcharge bracket. We moved the same week.
The 90-day plan
- Week 1. Reconstructed cadastral history — the value had been revised in 2018, so the 1.1% rate applied for all three years. Confirmed EU-citizen 19% rate. Calculated the corrected principal: €380/year, €1,140 total.
- Week 2. Filed the three years of Modelo 210 via voluntary disclosure (Modelo 210 with complementaria indication). Paid principal plus voluntary-disclosure surcharges of 5%, 10%, and 15% for the three years respectively (the scale climbs with delay).
- Weeks 3–8. Awaited Hacienda confirmation. None of the three filings triggered a notification — the standard outcome when the disclosure is voluntary and the principal is paid in full.
- Week 9. Set up the recurring quarterly filing calendar with the client. Imputed-income years roll into the annual filing on 31 December of the following year. Reminder emails six weeks before each deadline.
- Week 12. Hacienda issued the standard resolución confirming the three years closed. File officially clean.
The numbers, at the end
| Outcome | Amount |
|---|---|
| Principal paid (3 years Modelo 210) | €1,140 |
| Voluntary-disclosure surcharges | €340 |
| Penalties | €0 |
| Total paid | €1,480 |
| vs. worst case if Hacienda contacted first | ~€8,600 |
Spanish tax law treats unsolicited regularisation very differently from regularisation triggered by a notification. The difference between the two is around €7,100 in this file. The window closes the moment a letter from Hacienda arrives. If you have unfiled years, the math says move now.
What it took from the client
One discovery call. One signed engagement letter and tax-advisor mandate. Two scans of the deed and the latest IBI receipt. An IBAN for the principal payment. That is the entire client-side workload. The rest is paperwork on our side and patience while Hacienda processes.
A year on, all four quarterly cycles have run cleanly. The €380/year imputed-income filing is on autopilot, paid via domiciliation. The file that almost cost €8,600 now costs €380 a year and one minute of attention each January.
Other engagements
Saved €12,400 in avoidable non-resident tax on a €340k purchase.
From first viewing to €3,200/month rental in under 6 months.
Two properties, one treaty credit, zero double taxation.
Whatever stage you're at, let's talk.
A 30-minute discovery call is free and clarifies more than any email chain.