Annual accounts · UK
Companies House,
on time.
We prepare and file your annual accounts with Companies House. Full accounts or micro-entity, depending on your size.
Taxes,
on time and stress-free.
VAT, Corporate Tax, Confirmation Statement, franchise tax. On the PRO plan (or by quote) we prepare and file them; you just sign when we tell you.
Filing on PRO or by quote
Deadlines monitored
Dedicated tax advisor
VAT Q1 filed
What Taxes files for you
All your tax obligations,
All your tax obligations,
covered.
Swipe to see each filing. Tap + for details on deadlines and process.
Companies House,
Corporate Tax · UK
CT600 filed
with HMRC.
UK corporation tax calculated from your Books P&L. Filed electronically with HMRC on time.
VAT returns
Quarterly VAT,
no reminders needed.
If your company crosses the VAT threshold or registers voluntarily, we file your quarterly returns automatically.
Confirmation Statement · UK
Company records
up to date.
A mandatory annual update to Companies House confirming directors, shareholders and registered address. You'll never miss it.
Franchise Tax · Delaware
Delaware DE,
compliant.
For Delaware LLCs and C-Corps, the annual franchise tax is mandatory. We calculate it, pay it, and file the annual report.
Tax advisor
A real human,
looking out for you.
Your dedicated tax advisor reviews everything before filing, and looks for legitimate ways to optimize your taxes.
Key detail
What's included
Taxes on screen
Tax deadlines,
Tax deadlines,
under control.
A calendar with your critical dates, estimates of amounts due, and auto-filled CT600, VAT and Franchise Tax forms. Your advisor reviews them and you sign digitally. No last-minute surprises.
Interactive demo
the tax calendar mail for your company.
Click any return to see its status, breakdown, and which Books documents make it up. Your advisor prepares them, you just approve.
app.aiden.es/taxes
DEMO
Next return
VAT Q4 · 31 Jan
Filed YTD
3 / 4
Documents in Books
147
Click any return to see its breakdown.
Selected return
—
—
Overview
Period—
Due date—
Documents in Books—
Assigned advisorSara M. (Aiden)
Financial breakdown
Sales (output VAT)—
Purchases (input VAT)—
VAT payable—
📊 Generated from Books data
The — documents from the period (invoices issued with Aiden Pay + expense invoices categorized by Lunnar) automatically generate this return. No Excel required.
On the PRO plan or by quote
Taxes kicks in
the moment you form your company.
When you form your company with Aiden Startup, Taxes starts monitoring deadlines from day one. Filings (annual accounts, Confirmation Statement, CT600) come with the PRO plan or can be ordered separately by quote.
Frequently asked questions
About Taxes,
About Taxes,
in detail.
What is the difference between Books and Taxes?
Books is your financial archive: you upload invoices and documents and they stay organised and searchable. Taxes is the preparation and filing of tax obligations (annual accounts, corporation tax, VAT…), available on the PRO plan or by quote. They complement each other: paperwork organised in Books makes any filing easier.
Does Taxes file taxes automatically, or does it just prepare the documents?
It files them electronically with HMRC (UK) or the Delaware Division of Corps and the IRS (US). You just approve with your digital signature before we submit. We never file without your final approval.
What happens if I miss a deadline?
You won't miss deadlines with Taxes. We monitor every deadline and notify you weeks in advance. If you still ignore the alerts and miss a deadline, we handle the penalty with HMRC/IRS and adjust the process.
Does Taxes include filing corporate tax?
Yes. For the UK, we file the CT600 with HMRC within the 12-month deadline. For a Delaware C-Corp, we file the federal tax return (Form 1120). For a Delaware LLC, it depends on the tax election (single-member disregarded, multi-member partnership, etc.) — we advise you on this during formation.
What if I register for VAT voluntarily before reaching the threshold?
We handle it either way. On the initial call, we advise you on whether it's worth registering voluntarily (for example, to reclaim VAT on initial expenses). If you decide to register, Taxes starts filing quarterly.
Does Taxes support companies operating in multiple countries?
Yes, with a Pro plan. If your UK LTD invoices in the EU under OSS, or your Delaware LLC has a permanent establishment in another US state, we handle it. For very complex cases (multiple active jurisdictions, international holdings), we may need to work with specific local advisors.
Does Taxes also file my personal income tax return in Spain?
No. Taxes only handles the company's tax obligations in the UK or the US. For your personal income tax in Spain, you can work with a Spanish advisor. We'll provide any documents they need (dividends paid out, salary received, etc.).
What happens if Hacienda/HMRC/IRS audits me?
Your tax advisor handles the communication directly. We prepare all the requested documentation from the files we already have in Books. In the vast majority of cases, it's resolved without escalating. If it does escalate, we connect you with a specialized tax lawyer (at an additional cost).
Taxes up to date,
mind at ease.
Taxes is available on the PRO plan or by quote. Deadlines monitored, filings handled by our team, an advisor one chat away.
In the words of our founders
Situations we solve every week for founders coming from Stripe Atlas, Firstbase, or a traditional accounting firm.
MG
María García 🇪🇸
Founder · Acme SaaS
I used to pay $500 with Stripe Atlas. Now I pay $21.99 a month with Aiden and I have a Spanish-speaking advisor. Total game changer.
–480$
vs Stripe Atlas year 1
PD
Pablo Domínguez 🇪🇸
CEO · Loop Studio
In 36 hours I had my UK Limited up and running, a bank account, and my first invoice issued from Aiden Books. It doesn't get any faster.
36h
de cero a primera factura
LB
Lucía Bravo 🇪🇸
Co-founder · Northpath
Lunnar AI saves me hours every week categorizing invoices. At year-end close, all the accounts were ready in 4 clicks.
+12h
ahorradas al mes
DC
Diego Castaño 🇲🇽
Founder · Pixelroom
I migrated my LLC from Delaware where another company managed it. Aiden rescued it, cleaned it up, and keeps it running for a lot less.
–62%
sobre coste anterior
CF
Carla Ferra 🇪🇸
Solopreneur · Ferra Design
I didn't want to set up an SL in Spain with a sole trader accountant at €300/month. A UK Limited with Aiden costs me €20 and I get more tools.
–280€
/mes vs SL España
AM
Andrés Mejía 🇨🇴
CTO · Vortex Labs
My advisor replies in under an hour. I've asked legal questions that would have cost me €200 an hour elsewhere.
<1h
tiempo medio respuesta
SB
Sofía Belmar 🇪🇸
Founder · Belmar Studio
Aiden Pay lets me charge clients through Stripe with no markup. Stripe Atlas charged me an extra fee on top of Stripe's own fee.
0%
Aiden fee
JA
Jorge Aguilar 🇦🇷
Founder · Northland Co.
Forming a company from Argentina seemed impossible. With Aiden I was operating in the UK in under a week, without flying to London.
5 days
from Argentina
Illustrative stories based on situations our clients commonly face. Names, companies and figures are fictional.
500+ companies already trust Aiden
Encrypted data AES-256
Compliant with GDPR
Payments by Stripe
We file with Companies House
Support in Spanish
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