Accounting for startups is the process of setting up systems to track cash, expenses, payroll, revenue, and financial reporting from day one. For venture-backed startups, a strong accounting foundation helps founders monitor burn rate and runway, report accurately to investors, plan hiring, prepare for fundraising, and make faster decisions as the company grows.
The first 90 days are the right time to establish a solid financial foundation. This guide covers the practical startup accounting basics founders should set up from incorporation through their first monthly close, and explains when DIY bookkeeping stops being the smart choice.
Days 1–30: Build the Financial Foundation
Once you incorporate, open a bank account, and receive initial funding, your accounting needs to become more structured quickly. The goal during the first month is simple: make sure every dollar can be tracked accurately from the start. A perfect finance function can come later.
At pre-seed and seed, you do not need a large finance operation. You need clean separation of company and personal money, a simple chart of accounts, basic monthly bookkeeping, on-time tax and payroll filings, and reports a founder can actually read. Everything below builds that foundation in order.
Set up the business entities and accounts
Start by completely separating company finances from personal finances. For most venture-backed companies, that means establishing:
- A business checking account for operating expenses.
- A business savings or money market account for reserve cash, when appropriate.
- A corporate credit card account.
- Payroll accounts and provider access.
- Accounts for any payment processors, such as Stripe, if you are collecting customer payments.
- A process for storing formation documents, board approvals, financing documents, and bank statements.
Avoid paying company expenses on personal credit cards whenever possible. If it happens occasionally, document the expense and reimbursement clearly. Blending personal and company activity makes startup accounting harder, increases cleanup costs later, and can create issues during diligence.
Decide: Cash or accrual accounting?
Early-stage startups often begin with cash-basis accounting because it is straightforward: revenue is recorded when cash comes in, and expenses are recorded when cash goes out.
However, most VC-backed C-corps should expect to move toward accrual accounting sooner rather than later. Accrual accounting records revenue when it is earned and expenses when they are incurred, even if payment happens in a different month.
For example, if a startup prepays $12,000 for a one-year software contract, cash-basis books show the full $12,000 expense immediately. Under accrual accounting, the company records roughly $1,000 of expense each month over the 12-month service period. That gives management a more accurate view of monthly operating costs and burn.
Accrual accounting is generally more useful for venture-backed startups because investors, boards, and prospective acquirers typically want financial statements that show the economics of the business, not just the timing of payments. It also makes it easier to track deferred revenue, prepaid expenses, accounts payable, and accounts receivable as the company grows.
Create a startup-ready chart of accounts
A chart of accounts is the structured list of categories used to classify every financial transaction. It is the backbone of your general ledger and one of the most important parts of accounting for startups.
A simple early-stage chart of accounts should include categories such as:
| Area | Example accounts |
|---|---|
| Assets | Cash, accounts receivable, prepaid expenses, security deposits |
| Liabilities | Accounts payable, credit card payable, accrued expenses, deferred revenue |
| Equity | Common stock, preferred stock, additional paid-in capital, retained earnings |
| Revenue | Subscription revenue, services revenue, other income |
| Cost of revenue | Hosting, customer support, third-party delivery costs |
| Operating expenses | Payroll, contractors, rent, software, legal, accounting, marketing, recruiting |
The right chart of accounts gives founders visibility into the metrics that matter. For many SaaS and technology startups, that includes separating hosting and infrastructure costs from general software expenses, distinguishing direct customer costs from operating expenses, and tracking outside contractors by function. Our guide to setting up a chart of accounts includes information on charts of accounts for different industries.
Keep the chart of accounts lean. A 10-person company works best with a handful of meaningful categories rather than dozens of hyper-specific ones. Use categories that support real management decisions, tax reporting, budgeting, and investor updates.
Days 31–60: Put the Core Tool Stack in Place
Once the company’s accounts and basic bookkeeping structure are in place, the next step is to build a reliable workflow. The best accounting stack is usually simple, connected, and designed around the startup’s stage.
The essential startup accounting tools
Most early-stage companies need tools for bookkeeping, payroll, expenses, bill payment, and document storage.
| Need | Typical tool category |
|---|---|
| General ledger | Cloud accounting software such as QuickBooks Online |
| Banking and cash management | Startup-friendly business bank account and treasury tools |
| Corporate cards and expense controls | Spend-management or corporate-card platform |
| Payroll | Payroll provider with tax filing and employee onboarding support |
| Accounts payable | Bill-pay platform or an outsourced accounts payable process |
| Equity administration | Cap table management platform |
| Document storage | Organized cloud folder for bank statements, invoices, contracts, and tax records |
Select systems that reduce manual data entry, preserve documentation, and provide clean information for the monthly close, rather than buying every finance tool available.
For example, a corporate-card platform may automatically capture receipts, enforce spending policies, and sync transactions into the accounting system. That is much better than asking employees to send a spreadsheet of expenses at the end of every month.
Establish operating rules early
Startup accounting works best when every person handling money follows the same process. Establish a few straightforward rules:
- Require receipts and a business purpose for card transactions.
- Use the company card or approved reimbursement process for business expenses.
- Route vendor bills to a central inbox or accounts payable workflow.
- Maintain approval requirements for large expenses and contracts.
- Save signed contracts for major vendors, customers, financing, and leases.
- Reconcile bank and credit-card activity on a consistent schedule.
- Review payroll changes before each payroll run.
These habits may seem administrative, but they make the difference between a fast monthly close and a recurring scramble to determine what a transaction was for.
Days 61–90: Run Your First Real Monthly Close
A monthly close is the process of finalizing a company’s books for a specific month. During the close, the finance team verifies that transactions are complete, records required adjustments, reconciles balances, and produces financial statements.
For founders, the practical outcome is a reliable set of numbers: the income statement, balance sheet, cash flow statement, and often a budget-versus-actual report.
What happens during a monthly close?
A startup’s first monthly close commonly includes:
- Reconciling every bank account, credit card, and payment processor account.
- Confirming that payroll, contractor payments, and reimbursements are recorded correctly.
- Reviewing unpaid bills and amounts owed to vendors.
- Recording prepaid expenses and other accruals.
- Reviewing customer invoices, cash collections, and deferred revenue.
- Checking that financing transactions and equity-related entries are accounted for properly.
- Reviewing unusual or large transactions with management.
- Producing financial statements and management reporting.
A strong close process turns bookkeeping into decision-ready reporting. Instead of asking, “How much money is in the bank?” founders can ask more useful questions:
- What is our monthly burn?
- How many months of runway do we have?
- Are payroll and contractor costs increasing as planned?
- Is marketing spend aligned with the budget?
- Are we recognizing revenue correctly?
- What needs to change before the next board meeting or fundraise?
For most early-stage companies, the books should be closed monthly, ideally within a predictable timeframe after month-end. The exact close timeline will vary, but consistency matters more than speed at the beginning.
When DIY Startup Accounting Stops Being Smart
Founders can often handle basic startup accounting in the earliest days, particularly before funding, employees, recurring revenue, or significant vendor activity. But DIY accounting becomes risky once transactions get more complex.
The real question goes beyond “Do I need a bookkeeper?” It is whether the company’s financial activity has become important enough that inaccurate or delayed numbers create a business risk.
It may be time to outsource startup accounting when:
- You have raised a priced equity round or are preparing to fundraise.
- You are hiring employees or paying a growing contractor base.
- You need monthly financial statements for investors or board reporting.
- Revenue involves subscriptions, annual contracts, customer prepayments, or deferred revenue.
- You are managing multiple bank accounts, cards, entities, or currencies.
- Your books are consistently behind or unreconciled.
- You do not know your current burn rate or cash runway with confidence.
- Your tax, payroll, sales-tax, or compliance obligations are increasing.
- The founder is spending too much time categorizing transactions instead of building the business.
Outsourcing does not necessarily mean hiring a full-time controller or CFO. Many venture-backed companies begin with an outsourced accounting team that handles bookkeeping, monthly close, bill pay, financial reporting, and tax coordination. As the company scales, it can add more specialized support such as a controller, tax advisor, or fractional CFO.
Set Up Accounting Before It Becomes an Emergency
The best time to establish clean accounting is before a board member asks for a burn analysis, an investor requests financials, or a tax deadline reveals that the books are months behind.
A thoughtful first 90 days creates a foundation for better reporting, cleaner fundraising diligence, more accurate tax filings, and more confident decisions. Start with clean bank and card activity, a practical chart of accounts, an appropriate tool stack, and a consistent monthly close process. Then bring in expert support when the business outgrows DIY bookkeeping.
Kruze Consulting helps venture-funded startups build reliable accounting processes, close their books, prepare investor-ready financials, and scale their finance operations. Schedule a consultation with Kruze Consulting to get startup accounting support built for your stage of growth.
FAQs: Startup Accounting in the First 90 Days
- What accounting do I need at pre-seed and seed?
- Cash or accrual accounting: which should a startup use?
- What is a monthly close?
- When should I hand off bookkeeping to an outsourced team?
What accounting do I need at pre-seed and seed?
At pre-seed and seed, keep it lean: separate company and personal finances completely, set up a simple chart of accounts, run basic monthly bookkeeping, and stay current on corporate and payroll tax filings. The priority is accurate, well-organized records a founder can read, not a full finance function. A generalist accountant can sometimes cover this stage if they genuinely understand venture basics like SAFEs and Delaware C-Corps.
Cash or accrual accounting: which should a startup use?
Many startups begin with cash-basis accounting because it is simple, but most VC-backed C-corps should move toward accrual accounting sooner rather than later. Accrual records revenue when it is earned and expenses when they are incurred, which gives a truer picture of monthly burn and unit economics. It is also what investors, boards, and future acquirers expect to see in your financial statements.
What is a monthly close?
A monthly close is the process of finalizing your books for a given month. The finance team reconciles every bank, card, and payment processor account, confirms payroll and vendor activity is recorded, books accruals and prepaid expenses, reviews revenue and deferred revenue, and produces financial statements. The result is a reliable income statement, balance sheet, and cash flow statement you can use to make decisions and report to your board.
When should I hand off bookkeeping to an outsourced team?
Consider outsourcing once your financial activity is complex enough that late or inaccurate numbers become a business risk. Common triggers include raising a priced round or preparing to fundraise, hiring employees, needing investor or board financials, recognizing subscription or deferred revenue, managing multiple accounts or entities, or falling consistently behind on reconciliations. Many startups start with an outsourced team for bookkeeping, monthly close, and reporting, then add a controller or fractional CFO as they scale.
