MTD and the Environment: Measuring Paper & Carbon Savings

What this guide covers

This article explains how the 2026–28 rollout of Making Tax Digital for Income Tax (MTD ITSA) can reduce paper use and carbon emissions for sole traders, landlords and small businesses. It gives practical methods for measuring paper and carbon savings, realistic examples you can use today, and simple steps to include environmental metrics in your move to digital accounting.

Why MTD ITSA matters for the environment

MTD ITSA requires eligible taxpayers to keep digital records and send quarterly updates using MTD-compliant software. Beyond improved accuracy and compliance, the shift from paper to digital brings measurable environmental benefits: fewer printed invoices, less postage, reduced travel for bookkeeping, and lower physical storage needs. When you measure those savings, they quickly stack up — and they help you make evidence-based sustainability decisions for your business.

Key dates to keep in mind

• April 2026: MTD ITSA applies to individuals with annual income over £50,000.
• April 2027: Threshold lowers to £30,000.
• April 2028: Threshold lowers to £20,000.

These staged dates mean many small businesses will now plan their software, processes and environmental reporting alongside compliance. If your organisation is a Limited Company, note that MTD for Corporation Tax is not mandated for 2026 (estimates for Corporation Tax MTD are 2028+), however from March 2026 you must use commercial software to file CT600s.

How digital change reduces environmental impact: the main channels

• Paper and printing: fewer invoices, supplier statements and internal reports printed.
• Postage and courier trips: fewer letters and fewer deliveries of physical documents.
• Travel: fewer visits between accountants, clients and advisers when documents are shared digitally.
• Physical storage: reduced archive space and less need for off-site storage or destruction services.
• IT & hosting: potential reductions in local server energy use if you move to efficient cloud providers (but note cloud hosting also has a footprint — choose green hosting where possible).

Measure what matters: a practical approach

To quantify environmental savings, break the exercise into three parts: (1) measure, (2) convert to carbon, (3) report and improve. Use official conversion factors (for the UK, the Department for Business, Energy & Industrial Strategy — BEIS — publishes greenhouse gas conversion factors). Below is a step-by-step method you can follow.

Step 1 — Establish a baseline

Identify the paper, postage and travel you currently use in a typical reporting period (monthly or quarterly). Typical items include:

• Number of A4 pages printed per month (invoices, reports, remittances).
• Number of letters posted.
• Number of client visits and average miles travelled for bookkeeping or meetings.
• Amount of archive boxes stored off-site and frequency of retrieval/destruction.

Record a three-month baseline if possible so you account for seasonal variation.

Step 2 — Apply emission factors (use BEIS)

Use the latest BEIS greenhouse gas conversion factors for the UK to convert physical units into carbon dioxide equivalents (kgCO2e). If you prefer not to download the full tables, use published representative values as illustrative starting points (always state they are illustrative and check BEIS for firm reporting numbers).

Illustrative examples you can use for quick estimates:

• A4 sheet of paper (production & lifecycle): ~0.004–0.006 kg CO2e per sheet (4–6 g). Use your supplier figures if you have them.
• UK letter posted second class (incl. transport): ~0.02 kg CO2e (20 g) per letter (illustrative).
• Car travel: typical petrol car ~0.24–0.28 kg CO2e per mile (illustrative).

These figures are examples only. For accurate reporting use BEIS conversion factors or your accountant’s guidance.

Step 3 — Calculate savings after digitising

Decide which items you will eliminate or reduce. Common targets when moving to MTD-compatible software:

• Stop printing client statements: 100% reduction for digital statements.
• Replace posted invoices with emailed PDFs: near 100% reduction in postage.
• Reduce in-person bookkeeping visits by 50% by using shared cloud access and bank feeds.
• Reduce archive storage need by digitising historical records (ensure retention policy meets HMRC requirements).

Multiply the reduced units by the conversion factors to estimate kgCO2e saved per period.

Simple worked example — a sole trader

Baseline (monthly average):

• Printed pages: 600 A4 sheets
• Letters posted: 40
• Business miles for bookkeeping & meetings: 120 miles

Assume illustrative emission factors (check BEIS for precise figures):

• A4 sheet: 0.005 kgCO2e
• Letter posted: 0.02 kgCO2e
• Car mile: 0.27 kgCO2e

Baseline monthly emissions:

• Paper: 600 x 0.005 = 3 kgCO2e
• Post: 40 x 0.02 = 0.8 kgCO2e
• Travel: 120 x 0.27 = 32.4 kgCO2e
• Total: 36.2 kgCO2e per month

After moving to digital (realistic reductions):

• Printed pages cut to 60 (90% reduction): 60 x 0.005 = 0.3 kgCO2e
• Letters cut to 4 (90% reduction): 4 x 0.02 = 0.08 kgCO2e
• Travel halved to 60 miles: 60 x 0.27 = 16.2 kgCO2e
• Total: 16.58 kgCO2e per month

Monthly saving: 36.2 – 16.58 = 19.62 kgCO2e (approx). Annualised that is ~235 kgCO2e. For a sole trader this is a meaningful reduction, and many clients will achieve larger savings once archives and other manual processes are digitised.

Include non-carbon benefits

Don’t overlook co-benefits that are easy to quantify and important to stakeholders:

• Time saved in admin (hours per month).
• Reduced stationery and storage costs (£ cost savings).
• Lower risk of lost documents and easier audit trails.

Industry-specific considerations

If your business operates in a specific industry — for example, trades such as plumbers or electricians, or sectors like retail and hospitality — there are extra opportunities to measure and reduce emissions. For {industry}, typical business costs that both influence environmental impact and can be reduced by going digital include:

• Travel for site visits and deliveries (fuel and mileage).
• Printed job sheets, invoicing and warranty paperwork.
• Consumables related to printing and storage for parts lists and manuals.

When you replace paper job sheets with mobile-first apps and share digital invoices, you can reduce both mileage and paperwork. Track the number of site visits avoided and multiply by your vehicle’s per-mile emissions to estimate reductions. If you want us to produce industry-specific templates for measuring these savings, we can help set one up for your business.

Landlords and property management

Landlords moving to MTD-friendly software can measure savings from:

• Digital tenancy agreements, rent statements and repair invoices (reduced printing & postage).
• Fewer in-person visits when tenants and agents use portals for rent queries and maintenance updates.
• Reduced physical archive of tenancy files.

Example: a small portfolio manager who digitises rent statements for 50 tenancies could eliminate hundreds of printed pages and dozens of mailed letters each year. Use the same emission-factor approach above to translate this into kgCO2e.

Choosing software with sustainability in mind

All MTD-compliant software will meet HMRC’s technical requirements, but if your aim is to maximise environmental benefit, consider these features:

• Client portals for secure digital document exchange (reduces printing and meetings).
• Mobile-first capture of receipts and job sheets (reduces on-site paperwork).
• Automated e-invoicing and direct submission (reduces postage).
• Cloud hosting providers that publish renewable-energy or efficiency credentials.

Ask software vendors about their energy use and hosting partners. Some vendors choose data centres powered by renewable energy or buy offsets — these choices affect the real-world footprint of your digital records.

Common questions and practical answers

• Do I still need to print anything under MTD? You must keep adequate records, but that can be digital. HMRC accepts scanned and digital records, so printing is rarely necessary. Keep backups and follow retention rules.
• Can I use spreadsheets? HMRC allows digital record-keeping but requires compatible software to submit updates. Many businesses keep spreadsheets but pair them with MTD-compatible tools or bridging software.
• What about backups? Backups are essential. Use encrypted, managed cloud backups to reduce reliance on physical media while maintaining resilience.

Reporting your savings: simple templates

To make your sustainability message credible, use a simple reporting template each quarter that shows:

• Units saved (pages, letters, miles).
• Conversion factors applied (link to BEIS or state your source).
• Calculated kgCO2e saved this period and year-to-date.
• Monetary savings where relevant (postage, printing, storage costs).

We can provide ready-made Excel or cloud templates that plug into your accounting software to automate the data collection.

Practical checklist for a green MTD transition

• Choose an MTD-compliant software with client portals and mobile capture.
• Agree with your accountant what records will be digital and where backups will be kept.
• Run a three-month baseline of paper, postage and travel.
• Set targets for reduction (eg 80% fewer printed pages in six months).
• Use BEIS factors to convert units into kgCO2e and report quarterly.

Risks and responsibilities

Going digital reduces environmental impact but introduces responsibilities. Keep regular backups, apply access controls, and ensure your digital records meet HMRC’s retention and legibility rules. If you work with an agent or accountant, make sure roles and responsibilities for record-keeping are written down — this protects both compliance and your sustainability claims.

How Tax Digital can help

At Tax Digital we specialise in MTD ITSA implementation and can help you measure the environmental and cost benefits of going digital. We set up MTD-compliant software, create simple measurement templates, and produce quarterly reports you can share with stakeholders or include in sustainability statements. We take the stress away and make compliance easy.

Final practical tips

• Start small: digitise invoices and statements first, then tackle job sheets and archives.
• Keep your data tidy: consistent naming and tagging makes measurement straightforward.
• Use official conversion factors and document your assumptions in any public-facing claims.

MTD ITSA is an opportunity to modernise accounting practice and reduce environmental impact at the same time. With a structured approach to measurement, many businesses will find that going digital pays for itself through lower costs, time savings and a smaller carbon footprint.