Spanish road tax calculator (IVTM)
The Spanish road tax (IVTM) is municipal: it starts from a state rate per fiscal horsepower and each town applies a coefficient of up to 2. Enter the fiscal HP and your town's coefficient to estimate the annual amount.
Shown in the logbook (fiscal power)
From 1 to 2 depending on your town
Frequently asked questions
What is fiscal horsepower?+
An administrative measure of engine power, different from real HP. It's in the logbook and is the basis of the IVTM.
Why does the tax vary between cities?+
Because the IVTM is municipal: the law sets a minimum state rate and each town applies a coefficient of up to 2 on it.
Are there discounts for electric or classic cars?+
Many town councils discount up to 75% of the IVTM for electric cars and historic or low-emission vehicles, but it depends on each municipality. This tool estimates the base amount without those discounts: confirm them in your town's tax bylaw.
What are the minimum and maximum IVTM for a car?+
The state rate runs from €12.62 (under 8 fiscal HP) to €112.00 (20 or more). Since the municipal coefficient can't exceed 2, the real range goes from that €12.62 in a town with no surcharge to €224.00 for a 20+ fiscal HP car where the coefficient is at the cap.
Can the municipal coefficient exceed 2?+
No. Article 95 of the TRLRHL lets town councils increase the state rates by a coefficient that cannot exceed 2. If your council sets no surcharge, the state rate applies as is (equivalent to coefficient 1).
Where do I find my town's coefficient?+
In your town council's IVTM tax bylaw, published on its website. There's a shortcut: divide last year's bill by the state rate for your band and you get the applied coefficient. For example, a €51.12 bill on a €34.08 base reveals a 1.5 coefficient.
Does this calculator include the discounts?+
No: it estimates the base amount (state rate × coefficient) without discounts. If your council discounts EVs, classics or low-emission vehicles, subtract that percentage from the result: at the maximum 75% discount, a €51.12 bill would drop to €12.78.
How the IVTM is worked out: state rate × municipal coefficient
A car's road tax is a single multiplication: amount = state rate × municipal coefficient. The state rate is set by article 95 of the TRLRHL (Royal Legislative Decree 2/2004) in fiscal-horsepower bands, and it's the same across Spain: it's the minimum any council can charge. The coefficient is decided by each municipality in its tax bylaw, with a legal cap of 2.
This calculator replicates that formula: enter the fiscal horsepower from the technical sheet and your town's coefficient, and it returns the estimated annual amount before discounts. If you don't know the coefficient yet, the default (1.5) is a reasonable midpoint between the minimum (1) and the maximum (2) while you look up your bylaw's.
| Fiscal horsepower | State rate | Maximum at coefficient 2 |
|---|---|---|
| Under 8 fiscal HP | €12.62 | €25.24 |
| 8 to 11.99 fiscal HP | €34.08 | €68.16 |
| 12 to 15.99 fiscal HP | €71.94 | €143.88 |
| 16 to 19.99 fiscal HP | €89.61 | €179.22 |
| 20+ fiscal HP | €112.00 | €224.00 |
Worked example: 11.5 fiscal HP at coefficient 1.5
A car with 11.5 fiscal HP falls in the 8-11.99 band, whose state rate is €34.08. In a town with a 1.5 coefficient, the annual bill is 34.08 × 1.5 = €51.12 — exactly what the calculator returns with the default values. The breakdown shows the three pieces: the final amount, the tax band your car falls into and the minimum state rate before the coefficient.
The same car would pay €34.08 in a town with no surcharge (coefficient 1) and €68.16 where the coefficient is at the legal cap (2). Same vehicle, different town — the bill can double.
At the top of the table, a car with 20 or more fiscal HP moves between €112.00 and €224.00 a year depending on the municipality.
What fiscal horsepower is and where to find it
Fiscal horsepower (CVF) isn't the engine's HP: it's an administrative measure of power used for tax purposes. It appears in the vehicle's technical sheet as fiscal power, usually with two decimals. The full scale has five bands, from under 8 CVF (€12.62) to 20 or more (€112.00): the state base multiplies by almost nine between the lowest and the highest band.
A detail that surprises people: the bands apply to the exact value. A car with 11.98 CVF has a €34.08 base, but one with 12.00 CVF jumps a band and its base rises to €71.94 — more than double over two hundredths of a fiscal horse. It pays to copy the exact figure from the sheet rather than round it.
Discounts and why it changes from town to town
The IVTM is a municipal tax: the law sets the minimum rate and each council decides, within the coefficient cap of 2, how much to raise it in its tax bylaw. That's why the same car can pay twice as much in one town as in the next.
Many councils also add optional discounts of up to 75% for electric or 0-label vehicles, and for classics or low-emission cars. This calculator doesn't subtract them: find them in your bylaw and apply the percentage to the result — at a 75% discount, the example's €51.12 drops to €12.78.
The tax isn't the only car cost that depends on where you live: the ITV varies by region and fuel changes daily — compare prices by region.