
Stop mixing tax money with rent money.
Invoice Split Ledger is a one-file browser ledger for US 1099 / Schedule C operators. Log invoices and expenses. When you mark an invoice paid, profit splits into a tax vault, a slow-month buffer, and spendable cash. A 2026 IRS estimated-tax calendar sits next to the vault.
WHAT YOU GET
• invoice-split-ledger.html — runs offline, no account
• Sample year plus CSV
• 2026 estimated dates from the IRS FAQ (Apr 15, Jun 15, Sep 15, Jan 15 2027)
• SE tax sketch using the public 15.3% on 92.35% method and the SSA 2026 wage base ($184,500)
• Personal or commercial license
HOW IT WORKS
NOT THIS
Educational cash planning. Not Form 1040-ES, not a CPA, and not a promise you will owe less tax. 7-day refund if the file will not run in a current desktop browser.