Best accounting software for agencies

The best accounting software for agencies, by need

For agencies billing retainers and running individual client projects, project-level profit tracking matters more than basic invoicing. Xero's Established plan ($90/month) and QuickBooks Plus ($115/month) both track project time and cost against revenue, Zoho Books Professional ($40/month billed annually) does the same for less, and FreshBooks is built around invoicing a fixed list of clients rather than tracking cost per project. Picking the right accounting software for agencies comes down to whether your priority is unlimited team seats, familiarity with your bookkeeper's tools, retainer billing, or the lowest price for project tracking. Every one of these four sells the same core ledger; what differs is the shape of the bill, and that shape is what decides whether you are still on the same plan in two years.

How they compare on project accounting, multi-client billing, and price

The short version is that each vendor meters something different: Xero meters invoice volume on its cheapest plan but never seats, QuickBooks meters seats, FreshBooks meters billable clients, and Zoho Books meters both seats and annual document volume. Prices and tiers come straight from each vendor's published pricing page, confirmed July 7, 2026. Confirm your own quote before you commit, since vendors change these often, and QuickBooks has another round of increases scheduled for August 1, 2026.

Xero: best if your account team keeps growing

Xero charges per organization, not per user, so every plan from Early ($25/month) to Established ($90/month) includes unlimited logins. That matters for an agency where account managers, strategists, and a bookkeeper all need to see the books without adding a seat fee. Project time and cost tracking, along with multi-currency invoicing and expense claims, live on the Established plan. Early and Growing skip project tracking entirely, so an agency has to budget for the top tier to get it. Early also caps you at 20 invoices and 5 bills a month, which a single retainer-heavy month can blow through, so treat it as a starter plan rather than a real agency tier. The tradeoff is that Xero has no phone support on any plan, only in-app chat and email, and its list prices have gone up multiple times over the past several years. If unlimited seats matter more than that risk, Xero is the more scalable pick as headcount grows, since adding a fourth or fifth account manager never shows up as a line item on the invoice.

QuickBooks: best if your bookkeeper already runs it

QuickBooks Plus, at $115/month, adds project profitability tracking and inventory on top of invoicing and bill pay, for up to 5 users. QuickBooks also sells a $20/month Solopreneur plan, but it's built for a single self-employed filer without full double-entry accounting, so it doesn't fit an agency billing multiple clients. Essentials, one tier down from Plus at $75/month, gives 3 users and multi-currency but skips project tracking, so an agency that wants to see margin per client actually needs Plus. The advantage of QuickBooks overall is almost entirely about who else touches your books: most US bookkeepers and accountants already work in it, so handoff is simple and you're not asking a longtime bookkeeper to learn new software. The cost of that convenience is per-seat pricing. Plus caps out at 5 users before you need the $275-a-month Advanced plan, and Essentials, Plus, and Advanced list prices are all rising again on August 1, 2026, to $85, $140, and $340. An agency close to outgrowing 5 seats should weigh that jump before committing. The full QuickBooks alternatives rundown covers the wider field if the price increase is the deciding factor.

FreshBooks: best for billing retainers to a defined client list

FreshBooks is the only one of the four with a named retainer feature. Unlimited proposals and client retainers become available on the Plus plan at $43/month, alongside double-entry accounting reports and accountant access. Pricing scales by number of billable clients rather than users or invoice volume: Lite caps out at 5 clients, Plus covers 50, and only Premium ($70/month) or the custom Select plan lift the client cap entirely. Premium also adds project profitability tracking. The catch for an agency with a real team: every plan below Select includes just 1 user, so each extra teammate costs $11/month on top. FreshBooks fits a small agency invoicing a stable roster of clients better than one that's scaling headcount fast. If you sign a new retainer client every quarter but rarely hire, the client-count model works in your favor. If your team is the thing growing, the per-seat add-on cost catches up with you faster than it would on Xero.

Zoho Books: cheapest way to get project accounting

Zoho Books Professional, at $40/month billed annually ($50/month billed monthly) for 5 users, is the least expensive of the four ways to get project profitability tracking, alongside multi-currency invoicing and inventory. Its Free plan also covers a genuine no-cost option for a one-person shop under $50,000 in annual revenue. What the free tier stops covering is exactly what an agency needs first: project profitability sits on Professional, so the moment you want margin per client, the free plan is no longer the plan you are on, and crossing $50,000 in revenue ends it regardless. Standard at $15/month billed annually is the first paid step, but it does not carry project profitability either. The tradeoff is hard caps: each tier limits both users and annual invoice volume, 10,000 a year on Professional, and support response times can run slow. For an agency already running Zoho CRM or another Zoho app, or one that just wants project accounting without QuickBooks' or Xero's price tag, Zoho Books is worth a look. Just check your invoice volume against the tier caps before you commit, since Professional stops at 10,000 invoices and bills a year and the next step up, Premium at $60/month billed annually, only raises that ceiling to 25,000.

What changes between 5 seats and 25 seats

At 5 seats all four are competitive, but at 25 seats only Xero's price is unchanged, because it is the only one of the four that never bills per user. A five-person agency can sit on QuickBooks Plus at $115/month, Zoho Books Professional at $40/month billed annually, or FreshBooks Premium at $70/month with four extra seats at $11/month each, and the gaps stay manageable. Grow past that and the models diverge sharply. QuickBooks Plus stops at 5 users, so seat six forces Advanced at $275/month, rising to $340 on August 1, 2026, which is the single largest step change in this comparison. Zoho Books runs from 3 to 15 users depending on tier, so a 25-person agency runs out of the published tiers entirely. FreshBooks adds $11/month per head with no bundled discount, so seats accumulate linearly forever. Xero's Established plan stays $90/month whether five people log in or twenty-five. If you expect to be materially bigger in eighteen months, price the plan you will be on then, not the one you are buying today.

Who each tool is wrong for

Each of these four has a clear disqualifying case: Xero is wrong for a one-person shop, QuickBooks for a growing team, FreshBooks for an agency adding staff faster than clients, and Zoho Books for high document volume or support-dependent buyers. Xero is a poor fit for a solo consultant, because unlimited seats are worth nothing to one person and project tracking still costs $90/month on Established. QuickBooks is wrong for an agency that plans to pass 5 users soon, since the leap from Plus to Advanced is far steeper than any competitor's next tier. FreshBooks is wrong for an agency whose headcount grows faster than its client roster, and wrong again for anyone who needs project profitability cheaply, since that only arrives at Premium ($70/month). Zoho Books is wrong for an agency issuing very high invoice volume against a tier cap, or one that needs fast hands-on support, and its Free plan is wrong for anyone above $50,000 in revenue by definition. None of these are dealbreakers on their own; they are just the point where the pricing model stops working in your favor.

Which one to pick

If unlimited team seats matter more than anything else, Xero is the safest scale path. If your bookkeeper is already fluent in one platform, stick with QuickBooks even though per-seat pricing bites once you pass 5 users. If retainers are the actual billing model and your team is small, FreshBooks Plus is built for exactly that. If price is the deciding factor and you still need project tracking, Zoho Books Professional gets there for $40 a month billed annually. None of the four is a universal answer. Figure out which one of seats, bookkeeper familiarity, retainer billing, or price is actually costing you money today, then pick the tool built around that. The Xero alternatives guide covers the wider field of options beyond these four.