Connect Fortnox

Connect Midday to Fortnox to export your categorized transactions. Popular with Swedish businesses using Fortnox for accounting and year-end preparation.

How it works

Once connected:

1. Transactions arrive from your bank and receipts are matched automatically
2. Ready transactions appear in the Review tab (the export queue)
3. Export to Fortnox — categories map to your BAS accounts
4. Receipts export as verification files
5. Exported transactions are marked as Exported in Midday

Learn about the full export flow →

Connect Fortnox

1. Go to Apps
2. Find Fortnox
3. Click Connect
4. Sign in to your Fortnox account
5. Authorize Midday to access your organization

You'll need admin access to your Fortnox account to authorize the connection.

Category mapping

Midday categories map to Fortnox account codes following Swedish BAS accounting standards.

Default mappings

Common mappings include:

Midday Category	Fortnox Account (BAS)
Revenue	3000-series
Office Supplies	5460
Software	5420
Travel	5800-series
Professional Services	6500-series

Customize mappings

1. Go to Apps
2. Click Settings on your Fortnox connection
3. Review and adjust category mappings
4. Save changes

Work with your accountant to ensure mappings match your chart of accounts.

What gets exported

Transaction data

• Transaction date
• Amount (in original currency)
• Description/merchant name
• Category (mapped to Fortnox account)
• VAT/moms if applicable

Attachments

• Attached receipts export as verification files
• Supports PDF, images, and common document formats
• Files appear in Fortnox linked to the transaction

Exporting transactions

1. Go to the Review tab in Transactions
2. Select the transactions you want to export (or export all)
3. Click Export and choose Fortnox
4. Transactions and receipts are sent to Fortnox with your category mappings and verification files
5. Exported transactions are marked as Exported in Midday

Swedish accounting considerations

VAT/Moms handling

• Midday tracks VAT amounts when available
• Maps to appropriate Fortnox VAT codes
• Review VAT settings in your Fortnox configuration

BAS account structure

Fortnox uses the Swedish BAS standard:

• 1xxx: Assets
• 2xxx: Liabilities and equity
• 3xxx: Revenue
• 4xxx: Cost of goods sold
• 5-6xxx: Operating expenses
• 7xxx: Depreciation and financial items
• 8xxx: Financial income/expenses

Midday's category structure aligns with this for straightforward mapping.

Fiscal year

Ensure your fiscal year settings match between Midday and Fortnox for accurate reporting.

Troubleshooting

Export errors

If transactions fail to export:

• Check that the Fortnox connection is active in Apps
• Verify transactions are categorized (uncategorized transactions can't export)
• Check category mappings are complete

Mapping errors

If transactions appear in the wrong account:

1. Review category mappings in Fortnox settings
2. Re-categorize affected transactions in Midday
3. Export again

Reconnecting

If the connection expires:

1. Go to Apps
2. Click Reconnect on Fortnox
3. Re-authorize with your Fortnox credentials

Fortnox connections may need periodic re-authorization for security.

Disconnect

To remove the connection:

1. Go to Apps
2. Click Disconnect on Fortnox
3. Confirm disconnection

Previously exported data remains in Fortnox. New transactions won't export.

Working with your accountant

Before connecting

• Discuss category mappings with your accountant
• Agree on which accounts transactions should flow to
• Set up the appropriate BAS accounts in Fortnox

Ongoing workflow

1. Transactions arrive and receipts are matched automatically
2. Review the Review tab — it's your export queue
3. Export to Fortnox when ready (weekly, monthly, or as needed)
4. Your accountant reviews in Fortnox for final adjustments

Year-end

• Export all transactions before year-end close
• All transactions and receipts are in Fortnox
• Your accountant has clean, organized data
• Reduces year-end preparation time significantly

Tips

• Categorize promptly: Keep transactions categorized so exports are ready
• Attach receipts: They export automatically as verification
• Review mappings: Work with your accountant to verify
• Export regularly: Weekly or monthly keeps Fortnox current

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