Ataru Cesium
Cesium consolidates the time trackers, spreadsheets, and manual calculations you currently juggle into a single tool. Less patchwork. Fewer points of failure. One source of truth.
Log hours against your clients and projects. Know exactly what to charge based on your rate.
Generate and send invoices based on tracked time. Configure billing cycles, payment terms, and email templates.
Set your federal and state tax percentages. See how much to set aside from each pay period for quarterly estimated payments.
Record quarterly estimated tax payments to the IRS and your state. Keep a history for year-end reconciliation.
Income by period, hours worked, capacity utilization, and profit and loss. The summary you need to make informed decisions.
Organize work by client and project. Set rates, track status, and keep everything connected.
Not a tax calculator. Cesium does not determine tax rates or provide tax advice. You provide your own tax percentages, and Cesium shows what they mean against your income.
Not an accounting platform. Cesium does not replace QuickBooks, Xero, or a professional accountant. It organizes the data that feeds into those tools and conversations.
US-centric tax model. The estimated tax workflow is designed for the US tax system. The intent is to support international users in the future, but that is not a current strength.