AI Tax Preparation Software for California Firms

Tax preparation built for California firms

From Los Angeles, San Francisco, and San Diego to the smaller communities in between, California practices share the same peak-season squeeze: a wall of returns arriving in a narrow window, and not enough reviewer hours to go around. UpTax was built for exactly that. You upload the client's documents — W-2s, 1099s, K-1s, brokerage statements, prior-year returns — and the AI extracts every figure, cross-checks it, and assembles a drafted return with the workpapers attached.

Because the draft comes back structured and referenced, your reviewer isn't re-keying data or hunting for a missing 1099 — they're doing the high-value work: checking positions, catching planning opportunities, and signing off. That's the difference between surviving California's busy season and actually growing through it.

Federal and California returns, handled together

UpTax prepares the federal return and the California state return as one connected workflow, so state adjustments, credits, and apportionment flow from the federal numbers instead of being re-entered by hand. California's high top rate, franchise tax, and dense small-business market make it one of the heaviest preparation states in the country.

For firms serving clients across state lines — common in Los Angeles and anywhere near California's borders — the platform handles multi-state and part-year situations, keeping residency and reciprocity straight so nothing slips through in the rush.

Every return type your practice files

UpTax covers the returns a full-service California firm actually prepares — individuals and business entities alike:

How California firms work with UpTax

1. Upload. Drop in the client's documents and prior-year return — no new portal for your clients to learn.

2. AI prepares. The engine reads and reconciles every source document and drafts the federal and California return with linked workpapers.

3. You review. Your California preparer or reviewer checks the draft, adjusts anything that needs judgment, and approves it.

4. You file. You sign and e-file under your firm, keeping full control and the client relationship.

Why California practices choose UpTax

Elastic capacity. Add reviewer-ready drafts during the crunch without adding headcount you'll carry all year.

Fewer errors, faster turnaround. Automated extraction and reconciliation cut the re-keying mistakes that eat review time.

Your firm, your brand. Clients in Los Angeles and across California stay your clients — UpTax works quietly behind your review.

Built for the profession. Designed with U.S. CPAs and EAs, so the drafts think like a reviewer, not a black box.