Manage invoicing, accounting, full UK payroll, expenses, sales pipeline, and reporting — all in one place. No separate CRM or payroll provider needed.
No implementation fees — guided onboarding wizard included.
From invoicing to compliance, manage every aspect of your business in one unified platform.
A powerful suite of tools designed for how modern businesses actually work.
Create professional invoices, track payments, and manage your cash flow. Automatic status updates, PDF generation, and email delivery built in.
Visualise your deals across every stage. Drag-and-drop Kanban board, weighted pipeline, activity tracking, and automatic client syncing.
IFRS-compliant Profit & Loss, Balance Sheet, and Trial Balance at the click of a button. Multi-currency support and period comparison included.
Run payroll natively without a separate provider. The 3-step wizard calculates PAYE, National Insurance (including the 2025/26 Employer NI rate of 15%), pension auto-enrolment, salary sacrifice, statutory pay, student loans, and net pay for every employee. Download HMRC FPS XML, generate PDF payslips, produce P60 year-end certificates, review payroll history, and have journal entries posted automatically to your GL — all without leaving Filssi.
Give employees their own login to submit and track expense claims directly — without access to your financial data. Managers approve or reject claims, and email notifications keep everyone in the loop. At £5 per employee per month, it replaces the paper-based process entirely.
Share a secure, signed link with your client so they can view invoice details, line items, and payment instructions — without needing a Filssi account. Attach supporting documents (PDFs, receipts, contracts) directly to invoices, bills, and purchase orders for a complete digital paper trail.
Know exactly where your cash stands today and where it is heading. The Cash Flow module tracks all inflows (AR payments) and outflows (AP, expenses, payroll) with a live statement, 90-day running balance forecast, risk alerts for projected shortfalls, and a daily cash calendar — all exportable to Excel.
Slice your financials across Departments, Cost Centres, and Project Codes. Tag every invoice, AP bill, and purchase order — and have those tags flow through to journal entries. Instantly see where money is being spent across the business without a separate BI tool.
Filssi is built as a Progressive Web App. Access your dashboard, raise invoices, and check reports from any device — no app store required.
Everything you need to run compliant UK payroll — PAYE, NI, pension, statutory pay, and year-end — built directly into Filssi. Updated for 2025/26 HMRC rates.
UK Payroll is included on the Pro plan. No separate payroll software licence needed.
Get started in minutes with a simple four-step process.
Create your account in under a minute. 14-day free trial, no credit card required.
Set up your company profile, chart of accounts, currencies, and team members.
Start creating invoices, tracking expenses, managing your pipeline, and running reports.
Scale your operations with advanced accounting, multi-currency support, and compliance tools.
One platform that replaces your accounting software, CRM, payroll, and payment tools.
IFRS-compliant double-entry bookkeeping, financial reports, and period controls.
No separate CRM subscription. Leads, opportunities, accounts, contacts, activities in one place.
Create payment files for your bank. Process AP invoices and expense claims together.
Chart of accounts, accruals, deferrals, fixed assets, depreciation — all built in.
Prepare and submit VAT returns. Making Tax Digital ready.
Set budgets by account or department and track actual vs. planned spend in real time.
Track cash flow, forecast upcoming balances, and analyse performance by department, cost centre, and project — all in one platform.
Run payroll natively with 2025/26 HMRC rates, PAYE, NI (all categories), pension auto-enrolment, statutory pay, and FPS XML — no separate payroll provider needed.
Invoice in any currency, convert at live FX rates, and report in your home currency. IAS 21 exchange differences handled automatically.
Attach PDFs, receipts, and documents directly to invoices, bills, and purchase orders — keeping your full audit trail in one place. No separate file storage needed.
Share a signed link so clients can view invoice details and payment instructions without a login. Secure 90-day tokens, no extra software for your clients.
Employees log in to their own portal, submit expense claims, and track approval status — without seeing your accounts. Approval email notifications keep the workflow moving.
Send overdue invoice reminders to your team with one click, and automatically notify employees when their expense claim is approved or rejected — no chasing required.
Managed month-end and year-end close processes with dividends, bonus accruals, tax provisions, and opening balance controls. Petty cash reconciliation and IFRS-compliant fixed asset schedules included.
Dedicated analytics dashboard with revenue metrics, sales-by-client charts, spend-by-category breakdowns, and financial performance analysis — all exportable to professional Excel reports with company letterhead.
Gate every invoice through a controlled process: Draft → Submitted → Approved → Issued, with reject capability and a full audit trail. Role-based access ensures only authorised staff can issue invoices to clients.
Give every role exactly the view it needs. System admins can hide entire modules — CRM, Payroll, Finance, Sales, Period End, and more — so team members only see what is relevant to their job. Two-layer RBAC: module visibility + 66 granular feature permissions.
Paste your supplier's CSV or TSV statement directly into the vendor record and let the system fuzzy-match it against your AP invoices. Instantly identify discrepancies without manual cross-checking.
AP invoices linked to a purchase order display a colour-coded match badge — green ✓ when the invoice total is within 5% of the PO, red ⚠ when it is not. Catch over-billing at a glance before approving payment.
Manage multiple businesses from a single login. Switch between companies instantly from the user menu — each with fully isolated data, settings, and financials. Perfect for accountants and group companies.
The Budget vs. Actual view gives you a one-click toggle between Source Documents and GL Journal Lines as the actuals source — ensuring your budget reports match exactly what is in the general ledger.
Filssi is built for real businesses, not IT departments. A guided 13-step onboarding wizard walks you through every configuration decision from day one. Each module follows a consistent, predictable layout so that once you know one area of the platform, you know them all. Contextual help, clear workflow statuses, and logical navigation mean your team can get productive within hours — no external training, consultants, or lengthy implementation projects required.
Every company gets a unique email address (e.g. yourcompany@ap.filssi.com). Suppliers email invoices directly there — Filssi reads the PDF, extracts vendor, date, amount, and currency via OCR, creates a draft AP bill automatically, and flags any duplicates for review. No manual data entry.
Plan and schedule your social media and content calendar alongside your financial operations — all from the same platform. Kanban board and calendar views help creative teams stay organised without switching tools.
Choose the plan that fits your business
| Feature | Starter | Growth | Pro |
|---|---|---|---|
| Invoicing & Quotations (PDF email) | ✓ | ✓ | ✓ |
| Expenses, AP Bills & Vendor Payments | ✓ | ✓ | ✓ |
| Purchase Orders | ✓ | ✓ | ✓ |
| Sales Pipeline (deal tracking) | ✓ | — | — |
| Full CRM (Leads, Accounts, Contacts, Activities) | — | ✓ | ✓ |
| Content Planner (full) | ✓ | ✓ | ✓ |
| Bank Reconciliation & Period Close | ✓ | ✓ | ✓ |
| VAT Returns & Multi-Currency | ✓ | ✓ | ✓ |
| Chart of Accounts & Journal Entries | — | Add manually | Full (import & customise) |
| Payment Batches | — | ✓ | ✓ |
| Fixed Assets & Depreciation | — | ✓ | ✓ |
| Payroll Journals | — | ✓ | ✓ |
| Full Payroll Suite (runs, mapping, liabilities) | — | — | ✓ |
| Accruals & Deferrals Engine | — | — | ✓ |
| Budgeting & Variance | — | ✓ | ✓ |
| Cash Flow Overview & Statement | — | ✓ | ✓ |
| Cash Flow Forecast & Calendar (90-day) | — | — | ✓ |
| Dimensions (Departments, Cost Centres, Projects) | — | — | ✓ |
| Financial Reports (P&L, BS, TB) | P&L, BS | Advanced | Advanced |
| Analytics Dashboard | Basic | Advanced | Advanced |
| Multi-User & Approval Workflows | — | ✓ | ✓ |
| Employee Expense Submission Portal | — | +£5/employee/mo | +£5/employee/mo |
| Document Attachments (Invoices, Bills, POs) | ✓ | ✓ | ✓ |
| Client Portal (Shareable Invoice Links) | ✓ | ✓ | ✓ |
| Overdue Invoice Email Alerts | ✓ | ✓ | ✓ |
| Expense Claim Approval Notifications | — | ✓ | ✓ |
| Bank Statement CSV Import | ✓ | ✓ | ✓ |
| Payroll Run Wizard (UK, HMRC FPS XML) | — | — | ✓ |
| RBAC & 66 Feature Permissions + 9 Module Controls | — | — | ✓ |
| Audit Log | — | — | ✓ |
| OCR Scanning | 50/month | 500/month | Unlimited |
| HMRC MTD Integration | — | — | ✓ |
Get a tailored quote from our team — pricing is scoped to your exact requirements, company size, and setup needs.
Our implementation team can assist with onboarding, data migration, user training, and configuration tailored to your business workflows. Fill in the form below and we will review your requirements and send a detailed, no-obligation quote — typically within one business day.
Enterprise-grade protection for your financial data
Every action logged with user, timestamp, and details
Hide entire modules per role + 66 granular feature permissions
Prevent changes to closed accounting periods
Encrypted data, secure sessions, PCI-compliant payments
Everything you need to know about Filssi