MTD for market traders: cash, card payments and stock records

The market-trader money model

A market trader's records often start on the table, not in the accounting software. You may begin the day with a cash float, take card payments through SumUp, Zettle or Square, accept some bank transfers, give refunds, buy emergency stock, pay a pitch fee and deposit cash later. The card reader may pay out net of fees, and a weekend market may settle several days later.

Under MTD, those facts need a digital trail. That can be software, a spreadsheet workflow with compatible software, or another supported approach, but the key habit is a daily takings record. It should separate gross cash, gross card sales, card fees, refunds, stock purchases, pitch fees and the amount banked.

Competitor content usually talks generally about sole traders or software. Accountancy Ally should beat it by explaining exactly what a trader should record after each market day, before receipts go missing and before the card payout has lost its link to the actual sales.

Examples where market traders get stuck

• A candle seller takes £600 cash and £900 card at a weekend market. The bank later shows one card payout after fees and a partial cash deposit. The accountant needs the daily gross takings too.
• A food stall buys ingredients in bulk and some emergency supplies on the day. Stock and consumables should not disappear into one unexplained supermarket receipt.
• A trader sells on Etsy during the week and at markets on weekends. Platform sales, card sales and cash sales all need separate source records.
• A craft seller uses personal mileage to attend fairs. The mileage log should show market dates, venues and business purpose.
• A pop-up stall has a strong Christmas season. VAT and MTD checks should use rolling or tax-year figures as relevant, not just average monthly profit.

Common mistakes

The first mistake is using bank deposits as total sales. That misses cash that was spent before banking and card fees taken before payout. The second mistake is recording only profit after stock. MTD threshold checks are about qualifying income, and VAT checks can involve taxable turnover, so gross sales matter.

The third mistake is leaving records until after a run of fairs. Market traders have small, frequent transactions and physical receipts that are easy to lose. A two-minute end-of-day record can save hours later. A fourth mistake is using one broad "expenses" category for stock, pitch fees, travel and card costs, which makes accountant review harder.

What to write in your first accountant message

Try: "I am a self-employed market trader. I sell at these markets and also take card payments through this provider. My latest gross sales before stock and fees were about this amount. I need to know when MTD applies and what daily takings record will handle cash, card payouts, stock, pitch fees and VAT checks." Attach one card-reader report, a sample daily takings sheet and a monthly stock summary.

A trading-day workflow

Market traders need a routine that happens on the same day as the market, not weeks later. Start with the opening cash float. At the end of the day, record cash sales, card sales, refunds, cash paid out for business costs, closing cash, card-reader fees if known, and the amount expected to be banked. Save the market booking or pitch invoice, and add a short note for anything unusual such as bad weather, cancelled stall days, damaged stock, a shared pitch or a refund after the customer left.

Once a week, match the card-reader reports to bank deposits. SumUp, Zettle, Square and similar providers may settle net of fees and may combine several trading days. Without a daily record, the bank deposit can hide the real gross sales. Stock records do not have to be over-engineered, but you should know what you bought, what was sold, what was wasted and what remains for the next market.

Software and stock setup

Before choosing software, ask whether it can handle daily takings, cash, card fees, stock categories and seasonal spikes. If you also sell online, ask whether Etsy, Shopify, eBay or TikTok Shop reports should feed into the same bookkeeping file or a separate sales summary. A simple trader may not need complex stock software, but the accountant still needs a method for stock purchases, stock held at year end, personal use, samples, damaged goods and refunds.

Questions to ask an accountant

• Should my MTD record use daily totals or individual transactions?
• How should card-reader fees and net payouts be shown?
• How do I record cash used to buy stock before it reaches the bank?
• What stock records are enough for my size of business?
• Should I also check VAT registration because of seasonal market spikes?

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