We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Consistent and standards-based comma-separated values (CSV) files help make data more effective and easier to share across government.
Spreadsheets are a common way to share data. Use this information to help you avoid common errors, improve interoperability and create more accessible spreadsheets.
How to line up your reporting dates for accounts and Company Tax Returns at the end of your limited company's first year
When you set up your limited company, you automatically get different…
File 2 Company Tax Returns if your company started trading on the same day…
Limited companies can be ‘dormant’ for Corporation Tax between setting up…
Instructions for software suppliers on creating a CSV file for the national drug treatment monitoring system (NDTMS) data submission.
Information on using our data collection systems to send us your early years census data, checking your return, validating the data and resolving errors.
Use the validation tool to test if a batch file you have prepared for upload is in the correct format.
A guide to non-standard files outside the standard Foreign, Commonwealth & Development Office corporate file plans.
Find out how to create a CSV file to submit your declaration, what file layout to use and how to resolve problems with file upload failures.
File changes to your company information including directors, shareholders and registered office address, and where your company records are kept
How to send information to Companies House through our extensible markup language (XML) schemas, by purchasing software or developing your own.
How Business e-services customers can set up portal notifications by email, RSS feed or both.
Learn how to publish accessible documents to meet the needs of all users under the accessibility regulations.
Sign in and send your Self Assessment tax return online.
Guidance for institutions on adding the e-learning module to their learning management system, modifying the files provided, or using the online training.
You should follow the standard file process outlined below when submitting work for online and paper billing.
A platform for the online transfer of information and documentation.
How schools should setup a Microsoft Windows laptop or tablet before lending the device to a child, family or young person.
Add metadata to data you are publishing so search engines can find the data you’ve published and display structured results for users.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone.