Tax advisory for companies and SMEs

Your SME doesn’t just need a bookkeeping service that files taxes. It needs tax advisory that helps you pay the correct amount, reduce costly mistakes, and make better-informed decisions.
 
Because corporate taxation is not decided only at quarterly filings or year-end closing. It is shaped earlier: in how you invoice, how you structure your company, how you set remuneration, what expenses you deduct, how you plan investments, how you respond to tax requests, and whether someone is helping you see the full picture or simply keeping you compliant by routine.
 
At ASO Corporate we approach corporate tax with a clear goal: helping you earn more or lose significantly less. We offer in-person consultations in Barberà del Vallès by appointment and also online across the province of Barcelona.

Your SME doesn’t just need to file taxes: it needs to pay correctly and make better decisions

The Spanish Tax Agency (AEAT) centralises tax filings for companies and professionals, the taxpayer calendar, and the different forms and returns, which reflects a very simple idea: corporate taxation is continuous, not occasional.

But there is a big difference between complying and complying properly and strategically.

Here, we don’t treat taxation as a chain of disconnected administrative tasks. We treat it as a core part of your business. Because if your company makes decisions without tax criteria, it can end up overpaying, deducting incorrectly, straining cash flow, or entering into problems that are much more expensive to fix later.

I want to review my company’s tax situation

Tax management and tax advisory: they are not the same

This difference is key, and it should be very clear on your website.
Tax management
This is the operational side:

• filing tax returns
• tracking deadlines and calendars
• handling recurring obligations
• responding to routine procedures

Tax advisory
This is the part that truly changes outcomes:

• analysing how each decision impacts taxation
• identifying risks before they become problems
• structuring ownership, remuneration and cash flows
• anticipating tax queries or issues of interpretation
• helping you pay correctly, not just pay

The Spanish Tax Agency (AEAT) sets out the formal framework of obligations, filings, and taxes for companies and professionals. Our value lies in not leaving you alone with a “filed form”, but in helping you interpret, plan, and make better decisions.

I want tax advice that thinks, not just files paperwork

VAT, Corporate Income Tax, withholding taxes and recurring obligations

Corporate taxation for SMEs usually revolves around recurring pillars, which the Spanish Tax Agency (AEAT) explicitly structures in its guidance for companies and professionals: VAT (IVA), Corporate Income Tax (Impuesto sobre Sociedades), withholding taxes (retenciones), and other periodic filings and reporting obligations.
That means good tax advisory is not limited to filing returns:

• VAT returns
• Corporate Income Tax returns
• withholding tax filings
• annual summaries and information returns

It also checks whether what is being filed actually makes sense in relation to the business reality, your structure, and your objectives.
Because an SME can be compliant and still be paying incorrectly. Or it can file everything on time and still be accumulating risks that eventually surface as tax audits, assessments, or reassessments.

I want to organise VAT, corporate tax and withholdings

Tax audits, inspections, and decisions you should not make blindly

The Spanish Tax Agency (AEAT) provides an electronic filing system for submitting documentation, making submissions, and responding to requests. This reflects a very important point: taxation is not limited to filing returns; it also requires properly responding when the Administration asks questions, reviews your filings, or disagrees with your position.

This is where a tax advisory with real judgement adds the most value:

• when a tax request (requirement) arrives
• when a tax audit or inspection is opened
• when there are doubts about deductibility or tax treatment
• when a position needs to be defended before the tax authority
• or when an important business decision may have significant tax consequences

In many businesses, the real savings do not come from “paying less at any cost”, but from avoiding mistakes, penalties, reassessments, and poorly structured decisions.

I want to review a tax request or an important tax decision

How we manage your company’s tax matters

1. We understand your business
We don’t do tax in the abstract. We look at your activity, structure, way of operating, and objectives.

2. We organise the recurring obligations
VAT, corporate income tax, withholdings, deadlines, and formal tax obligations.

3. We help you make better decisions
This is the real difference: we don’t just process filings, we also analyse and advise.

4. We prevent costly mistakes
Often, the best savings are not aggressive or risky. They simply come from doing things properly before problems arise.

5. We give you peace of mind
Our goal is that you feel something very clear: that your company is better controlled and better supported.

What documentation do we need?

If you already have it, it’s useful to gather:

• basic company or self-employment details
• recent tax returns filed
• your invoicing model and main expenses
• basic accounting information
• withholdings, rent, or other recurring tax obligations
• any tax requests or notifications, if applicable
• and any document that helps us understand how your company’s tax situation is actually working in practice

If you don’t have everything, that’s not a problem. We’ll tell you what is truly needed and what should be reviewed first.

If you want a more profitable, better organised SME with fewer tax surprises, this is where the change starts

Your company doesn’t just need someone to file tax returns. It needs tax advisory that helps you pay correctly, make better decisions, and better protect your profits.

Request an initial tax review