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Practical Excel tools and guides for UK side-hustle and small online sellers. Instant download, no subscription. Made by Marrow Hill, a UK small business.
UK Side Hustle Tax Tracker 2026-27 (£9)
Track income, expenses and mileage, and see whether the £1,000 allowance or actual expenses saves you more tax.
Seller Profit and Fee Calculator (£6)
Work out your true profit per sale after platform, payment and postage costs, for Etsy, eBay, Vinted, Amazon and more.
Online Seller Cost Audit Workbook (£9)
Find unused subscriptions, your true platform fee rate, loss-making products and hours you can win back.
Small Shop Card Payment and Website Security Pack (£12)
A plain-English UK guide and checklists for card payments, PCI basics and website security.
Guidance and estimating tools only, not tax or financial advice.