Model the business
Accounts, entities, periods, years, scenarios, versions and up to eight custom dimensions. Hierarchies roll up as you define them: added, subtracted or ignored.
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Open-source planning and budgeting for finance teams
Plan the year in grids your team already knows how to use.
Free and open source. Fork it on GitHub and deploy it on your own infrastructure.
NexTwelve holds your plan in a real dimensional model, with data-entry forms, reports and imports from your general ledger on top. Every change is audited, and data or metadata can go back to any moment.
No sign-up. You get a private copy of a sample company for 24 hours.
What it does today
Enter the plan in forms
Saved forms with page choices and up to three dimensions on rows and columns. Paste a block from Excel; if someone else changed a cell meanwhile, you see it before anything is saved.
Report and download
Read-only reports with empty rows hidden, figures in units, thousands or millions, and one-click downloads to Excel or CSV.
Load actuals from the GL
Import CSV or Excel exports through mapping rules and crosswalk workbooks. Every loaded cell drills back to the source lines it came from.
Control who sees what
Roles per application, member-level read and write access on secured dimensions, and plan windows that close periods for entry.
Undo anything
Every cell change is audited on a hash chain. Put data, members, forms or reports back to any moment, from history or from nightly snapshots.
Forms built for the way finance works
Put department and account on rows and months on columns, or any other combination. Only the cells a planner may change are writable; totals stay locked and roll up when the form is saved.
Everyone sees only the members they have access to. A planner for one region gets that region's rows and choices, in forms and in reports, and can write only to it.
Backups you can actually use
Preview exactly what a restore would change, then run it. Members deleted since come back with their history. Members added since stay if they hold data. A snapshot is taken first, so the restore itself can be undone.
Restore a slice of data to a moment, a whole application to a snapshot, or a snapshot into a new application next to the original.
Definitions you can edit in Excel
Export every form and report to a workbook: one sheet of settings, one sheet of layout rows. Change them in bulk, import the file back, and check it first: a problem is pointed out by sheet, row and column, and nothing changes until the whole file is right.
Each saved version is kept, including deleted definitions, and an old one comes back in a click.
Try it on a sample company
Fernhollow Foods is a fictional maker of sauces, spice blends and cold brew, with kitchens in Portland and Savannah and a co-packer in Vancouver. The demo gives you your own copy of its operating plan: FY26 actuals, an FY27 budget, July actuals loaded from a GL export, and its forms and reports.
Change anything. Nobody else sees your copy, and it is deleted after 24 hours. Start over at any time for a fresh one.
Things to try
- Open Department Opex, change a few months and save; then open P&L by Entity and watch net income move.
- Switch View as to the planner: only Fernhollow Canada is there, and only its cells are writable.
- Under Form and report definitions, export to Excel, change a layout, and import it back.
- Under Backups and restore, put the metadata or the data back to how it was before your changes.
- Choose View on phone and scan the code: the same forms and reports on your phone, read-only.
Three people in every copy
- Administrator
- Sees and changes everything, including metadata, definitions and backups.
- Planner, Fernhollow Canada
- Enters numbers for Fernhollow Canada only; the rest of the company is hidden.
- Viewer
- Reads every form and report; cannot change anything.
Open source. Run it on your own infrastructure.
Everything on this page is in the repository, under the Apache License 2.0: the API, the browser app, the database migrations, and the sample company behind the demo. Fork it and deploy it to your own Cloudflare account and Postgres database. There is no license fee; you pay only for your own hosting.
Your plan, your actuals and your audit trail stay in a database you control, and you can read every line of the code that touches them.
What it runs on
- Cloudflare Workers serve the API and the browser app.
- Postgres holds the model, the data and the audit trail, reached through Hyperdrive.
- R2 keeps uploaded files and the nightly snapshots.
The README walks through setup: create the database and the bucket, run the migrations, and deploy with Wrangler. Docker Compose runs the whole thing locally.
Coming next
A Google Sheets add-on, so planners work in Sheets against the same model, security and audit trail; then calculation rules, currencies and approvals. See the roadmap.