Finance & Fintech Templates

Finance and fintech diagram templates — payment processing, fintech architectures, invoicing, expense approvals, and trading systems to map how money moves.

7 templates

About finance diagrams

Finance and fintech diagrams map how money moves, and how the messages about money move. A single card payment involves the customer, the merchant, a payment gateway, a processor and the card network. It also involves the issuing bank that approves the charge and the acquiring bank that receives the funds for the merchant. Other diagrams cover invoicing and reconciliation, tiered expense approvals, loan origination, the annual budgeting cycle and trading systems.

Payments and fintech engineers use them to design integrations and explain failure modes. Finance operations, controllers and FP&A teams use them to document approval chains and the month-end close. Support teams use them to explain why a refund does not appear instantly. Auditors use them to check controls such as segregation of duties.

A good payment flow diagram separates phases that people often blur. Authorization happens at checkout, while capture, clearing and settlement happen later, often in batches. The diagram should show where card data is tokenized and where PCI DSS scope begins and ends. Approval flows need their thresholds and approvers written in, and every money movement should end in a ledger entry and a reconciliation step.

Which template should you pick?

  • Pick Payment Processing Flow Diagram (Checkout to Settlement) when mapping the merchant side of payments: checkout, gateway, fraud check, orders, ledger and reporting.
  • Pick Fintech Architecture Diagram (Neobank System Design) when designing a product with KYC, a double-entry ledger, banking-as-a-service APIs and fraud checks.
  • Pick Expense Approval Flow Diagram (Tiered Sign-Off Tree) when claims route to different approvers by amount, with a clear rejection path.
  • Pick Invoicing Workflow Diagram (Draft to Reconciliation) when accounts receivable needs the full invoice lifecycle, including overdue reminders and reconciliation.
  • Pick Loan Origination Process Diagram (Application to Funding) or Budgeting Process Diagram (Annual FP&A Cycle) when a multi-team process has several sign-offs.

Or generate one from a prompt

  • “Card payment flow for an online store: customer, checkout page, payment gateway, processor, Visa network, issuing bank authorization, acquiring bank settlement, merchant payout.”
  • “Expense approval tree: receipt check, manager approval under $500, finance approval from $500 to $5,000, CFO sign-off above that, rejection back to employee.”
  • “Month-end close process: subledger cutoff, bank reconciliation, accruals, intercompany eliminations, controller review, CFO sign-off, and published financial statements.”

Paste any of these into the AI flowchart maker to get an editable, animated diagram in seconds.

Tips for customizing finance templates

  • Add the card network, issuing bank and acquiring bank to the Payment Processing Flow Diagram when readers need the full path from authorization to settlement.
  • Show where card numbers are tokenized, so reviewers can see which systems fall inside PCI DSS scope.
  • Write thresholds and approvers into approval labels, such as Over $5,000: Director sign-off, and never let a requester approve their own claim.
  • End every money movement in a ledger or reconciliation node, so the diagram shows how the books stay balanced.
  • Use example amounts and fictional names. Never put real card numbers, account numbers or customer details in a diagram.

Learn more: Workflow diagram examples, including invoice approval

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