Choose the right procedure
Modelo 718 declares the state Solidarity Tax on Large Fortunes, complementary to Wealth Tax. Its title still contains “temporary”; do not infer that the tax has expired from that word. Check the law and return for the relevant year. A regional Wealth Tax relief does not by itself establish exemption from this state tax.
What to prepare
Prepare the relevant asset valuations, exemptions, ownership shares, debts and residence/tax-scope information. Keep the same-year Wealth Tax calculation, payment and filing reference where required. Scope, allowances, liability and filing tests must be checked together; do not treat one headline wealth figure as a personalised filing decision.
Spanish fields explained
Ejercicio is the tax year. Check taxable and exempt assets, deductible debts and the interaction with Wealth Tax paid under the applicable rules. Use the current-year form: AEAT announced a revised 718 annex in June 2026, first applicable to the 2025 return. Do not copy a prior-year calculation without checking the updated instructions.
How to submit
Open the official Modelo 718 electronic service for the required year. Use an accepted identification method or authorised representative, review all calculations, validate, select the appropriate payment option and complete official signature/submission. Check the year’s filing and direct-debit dates. An AEAT simulator or saved draft is not a submitted return.
After submission
Download the submitted return and official receipt and keep payment proof separately. Reconcile the figures with the same-year 714 and keep the supporting calculations. If data changes, use the correction route provided for that year and situation. Filing 718 does not replace 714 or foreign-asset information returns when independently required.