RentalBux – HMRC-Recognised MTD Software for Personal Trainers
Whether you're a self-employed personal trainer, fitness coach, yoga instructor, or gym owner managing multiple clients, classes, and income streams, RentalBux makes MTD compliance for personal trainers effortless.
HMRC recognised for MTD, RentalBux simplifies everything from quarterly submissions to year-end tax filing- all in one easy-to-use platform. You focus on training your clients and growing your fitness business, and we’ll handle your tax, digital bookkeeping, and MTD compliance.
Why Personal Trainers Rely On Us
Trusted by thousands of Personal Trainers across the UK
RentalBux finally gave me peace of mind.
Even after trying several tools, I was struggling with my portfolio of three rentals. MTD just added to that struggle. But then, I was introduced and all my worries disappeared. MTD submissions in minutes, track each property separately, allocate profit sharing. Wow!
Built for landlords, used by landlords.
As a landlord managing 12 units across two ownership structures and some self-employment income, I needed something that handled everything. RentalBux was the only software that did that.
Time saved.
Switching to RentalBux was one of the best decisions I made. Especially the joint-ownership module. Our family property had three owners with different shares, and RentalBux handled it quite efficiently.
Check if you need to join Making Tax Digital
Answer four quick and easy questions and see whether and when you need to start complying with MTD requirements. A few seconds to determine your eligibility and get guarantees on how you need to proceed.
Added bonus, no data leaves your device. Everything runs on your browser.
Making Tax Digital Checker
Find out when (and if) you need to join Making Tax Digital for Income Tax Self Assessment
Are you digitally excluded?
Digital exclusion means you cannot use digital tools due to age, disability, or lack of reliable internet access.
Do you have a National Insurance number?
A National Insurance number is required to join MTD for Income Tax.
Why do you need to send a Self Assessment tax return?
Select the main reason for submitting a Self Assessment return.
What is your expected qualifying income?
Enter your total gross income before expenses from self-employment or property.
Your result will appear here
What RentalBux Does for Personal Trainers?
Everything Fitness Coaches need for MTD compliance:
Digital Records
Quarterly Update Filing
Final Declaration
Why Rentalbux for Personal Trainers?
Built for Personal Trainers. Manage property income, expenses, and MTD tax filing all in one place.
Designed by Accountants Who Understand Fitness Businesses
RentalBux isn’t generic software built by tech developers. Every feature is designed for self-employed fitness professionals managing multiple income streams, equipment costs, and online and in-person sessions, all aligned with MTD for personal trainers.
HMRC-Recognised Software for Making Tax Digital (MTD))
RentalBux is HMRC-recognised software for MTD for Income Tax. That means every submission, quarterly updates, and the final declaration meet the latest digital reporting rules, giving you complete compliance confidence.
Foreign Landlord-specific Chart of Accounts
RentalBux removes the need to force your income and expenses into generic business categories by providing a pre-built chart of accounts designed specifically for fitness businesses. This covers income from personal training sessions, group classes, and online coaching programs, as well as gym or studio rental costs, purchases of equipment and supplies like weights, mats, bands, and machines, supplement or product sales with retail markups, professional insurance, certifications, and subscriptions, marketing and advertising expenses, and uniforms, branded clothing, and fitness apparel.
Simple Enough for Non-Accountants
Clear dashboards guided step-by-step workflows, and no accounting jargon. Even if you've never used bookkeeping software before, you can manage your records confidently without interrupting your training sessions or client programs.
Feel the Difference RentalBux Makes
Real challenges fitness trainers face, and how RentalBux solves them
| Challenges Fitness Trainers face | How RentalBux solves it |
|---|---|
| Managing multiple revenue streams from personal training sessions, group classes, online coaching, to product sales can make bookkeeping confusing. | RentalBux automatically consolidates all income in one dashboard, so you always know your true earnings and your quarterly submissions are accurate. |
| Payments arrive in cash, card, or online platforms and can easily be forgotten or mis recorded. | Every client payment is logged in real-time via the mobile app, ensuring no income is missed and your records stay up to date for HMRC. |
| Gym or studio rental costs, equipment purchases, and fitness supplies are scattered, making it hard to track allowable expenses. | RentalBux categorises all business expenses correctly according to HMRC rules, helping you claim every legitimate deduction without stress. |
| Marketing costs, supplement stock (protein powder, pre-workout, BCAA, etc), and equipment receipts pile up or get lost. | Snap receipts instantly from your phone, and RentalBux automatically matches them to the correct expense category for tax purposes. |
| MTD deadlines and quarterly submissions feel overwhelming, and mistakes can be costly. | Built-in reminders, step-by-step workflows, and HMRC-recognised filing make quarterly updates and the final declaration straightforward and stress-free. |
Frequently Asked Questions
Find answers to common questions about our services and solutions.
Yes. If you’re self-employed as a personal trainer, fitness coach, or gym owner, and your annual income for Tax Year 2024/25 exceeds £50,000, <a href="/blogs/making-tax-digital-for-income-tax-everything-you-need-to-know">MTD for personal trainers</a> applies from 6 April 2026. MTD requires HMRC-recognised software to keep digital records of income and expenses, submit quarterly updates, and file a year-end final declaration. RentalBux helps fitness professionals track all business income, expenses, and submit fully compliant quarterly updates with ease, so you can focus on clients and growing your fitness business.
Yes, but only when connected to bridging software. RentalBux integrates Google Sheets or Excel with HMRC, allowing you to continue using spreadsheets while automatically submitting compliant quarterly updates. This means you can track client payments, class fees, and supplement sales without manual re-entry, keeping your fitness business bookkeeping accurate and efficient with MTD software for personal trainers.
RentalBux handles all MTD requirements, including digital record-keeping, quarterly submissions, and the year-end final declaration. While it simplifies compliance and bookkeeping, many fitness professionals still work with accountants for expert tax planning, optimisation of deductions, and broader financial advice. RentalBux integrates seamlessly with your accountant or our in-house partner accounting service: <a href="https://www.ukpropertyaccountants.co.uk/services/making-tax-digital/">UK Property Accountants</a> to give you full support.
Non-compliance can lead to penalties, missed tax deductions, and HMRC audit risks. For example, failing to submit quarterly updates on time can result in points-based penalties, while incomplete digital records may cause missed expenses like equipment or supplement deductions. RentalBux ensures your fitness business stays MTD-compliant, with automated reminders, audit-ready digital records, and guided workflows, reducing the risk of penalties and stress.
Yes. RentalBux tracks multiple income streams separately such as your personal training business and any <a href="/blogs/making-tax-digital-mtd-for-landlords-how-should-you-prepare">rental property income</a> but combines them for MTD threshold purposes. This keeps your MTD mandated income organised, simplifies quarterly and annual reporting, and ensures all income types are compliant.