Startup costs: how to estimate, track and record them

One-off startup costs and ongoing costs

It helps to split your startup costs into two piles before you put a single number down. The split changes how you plan, and it can change how the spending is treated for tax.

Many people budget the one-off pile carefully and forget the second. Yet ongoing bills keep coming every month whether you've made a sale or not, so they decide how long your money lasts.

The main categories of startup costs

Every business is different, but most spending falls into the groups below. Use them as prompts, cross out what doesn't apply, and add anything specific to your trade.

Insurance deserves a careful look, because one type is a legal requirement once you employ people. Our business insurance guide explains what's compulsory.

How to estimate your startup costs

You don't need a spreadsheet wizard to estimate startup costs. You need real quotes and an honest guess at how long it takes to get paid. Work through these steps in order.

1. 1

   List everything

   Go through the categories above and write down every item you expect to pay for in your first year. Be specific: "laptop" rather than "IT".

2. 2

   Price it from real sources

   Use suppliers' price lists, written quotes and official fee pages. Avoid guesses from forums. Note whether each price includes VAT.

3. 3

   Split one-off from monthly

   Total the one-off startup costs. Then total the monthly costs and multiply by the number of months you think it will take to break even.

4. 4

   Add a contingency

   Things cost more and take longer than planned. Add a buffer you're comfortable with, and write down why you chose it.

5. 5

   Test the timing

   Map when money goes out against when it comes in. If clients pay invoices after 30 days, your startup costs need covering for at least that long after your first job.

6. 6

   Review monthly

   Compare actual spending with your estimate each month and update the plan. The first version is always wrong somewhere.

A simple test: if your sales came in at half your forecast, how many months could you keep going? If the answer worries you, trim the one-off startup costs or delay the ones that can wait.

Startup costs with published prices

A few startup costs have fixed, published prices you can plug straight into your estimate. These were checked on 25 October 2026.

• Registering a limited company: Companies House lists a fee of £100 to incorporate online and £124 on paper. Sole traders don't register with Companies House, so this cost doesn't apply to them. See the Companies House fees list.
• Annual confirmation statement: companies also pay a yearly confirmation statement fee, which Companies House lists at £50 online.
• Formation services: some providers bundle company registration with an account. Tide, for example, lists company formation at a one-off £14.99 with a Tide business account included. Check exactly what any package includes.
• Business account fees: plans vary from £0 a month to paid tiers. Tide's plans range from £0 (Free) to £69.99 a month (Max), and transfer limits and extras differ by plan.

Choosing between sole trader and limited company affects several costs at once, from registration to accountancy. Our sole trader or limited company guide sets out the differences. When you're ready to budget for banking, compare business bank accounts on the fees you'll actually trigger, not just the monthly price.

Startup costs before you start trading

You'll often spend money before your first sale: researching suppliers, building a website, buying a domain. These are called pre-trading expenses.

HMRC's Business Income Manual says relief can be given for expenditure incurred within seven years before a trade starts, as long as it would have been allowable if you'd already been trading. The usual "wholly and exclusively" test for business expenses still applies. Capital spending, such as equipment, isn't covered by this rule and is dealt with through capital allowances instead. You can read the detail in BIM46351.

The practical lesson: keep proof of your startup costs from day one, even before you've registered. Without receipts, it's hard to claim anything later. Ask an accountant how pre-trading spending applies to your situation, because the rules for sole traders and companies work differently.

Receipts and records for startup costs

GOV.UK says sole traders must keep records of all sales and income and all business expenses, with proof such as receipts for goods and stock, bank statements and invoices. It also says you must keep records for at least five years after the 31 January submission deadline of the relevant tax year. The GOV.UK record-keeping guide has the full list. Limited companies have their own record-keeping rules.

• Pay startup costs from a dedicated business account wherever you can.
• Photograph paper receipts on the day you get them.
• Save emailed invoices and order confirmations in one folder.
• Note what each purchase was for, especially mixed-use items like a phone.
• Record anything you paid personally before the business account opened.
• Keep a running list of one-off purchases separate from monthly bills.
• Check your list against bank statements each month.

Paying everything from one business account makes this far easier, because the statement becomes a ready-made list. Many app-based accounts let you snap a receipt and attach it to the payment.

Covering the gap

Once you've added up your startup costs, you'll know whether savings cover them or whether you need outside money. Options range from your own savings to Start Up Loans, grants and overdrafts. Our small business funding guide explains how each works. Whichever route you take, budget for repayments as an ongoing cost.

Sign-up offers on business accounts can trim your startup costs a little, but read the conditions before you count on the money. Our guide to how sign-up bonuses work explains what to watch for.

Tide is our featured partner. We may earn commission from referrals. Disclosure

Startup costs FAQs

Sources

• Companies House fees (GOV.UK)
• HMRC Business Income Manual: BIM46351 pre-trading expenditure
• GOV.UK: Business records if you're self-employed
• Tide: pricing and company formation pages (our research)
• All sources checked 25 October 2026.