By the ClientBrief Team · Last updated September 2026
Disclosure: ClientBrief is a competing product. This review is based on each vendor's published pricing and documentation, and on themes that recur consistently across public review platforms — not on extended hands-on use of the product. We publish no star rating because we have no basis for one. Where a tool is better than ClientBrief for a job, this page says so.
Ignition is the strongest tool in this comparison for turning a signed proposal into a paid, on-time engagement — branded proposals, e-signatures, engagement letters, and automated billing are built and priced well against what they replace. It costs $39-399 per month across four tiers (Solo, Core, Pro, Pro+) on annual billing, priced by active client count rather than seat count, plus a per-client overage fee once you exceed a tier's included count and standard payment-processing fees on every transaction it collects. What it doesn't do is the thing firms often assume an 'all-in-one' practice tool does: there's no client portal, no document request workflow, and no file exchange in any tier, at any price. Buy it to close the sale and get paid; plan on a separate tool for everything that happens between signing and filing.
Ignition (rebranded from Practice Ignition in 2022) is a proposal, e-signature, engagement-letter, and billing automation platform built for accounting, bookkeeping, and other professional-services firms. A firm builds a branded, priced proposal, sends it for e-signature, and the client accepts and attaches a payment method in the same flow — Ignition then turns that into an active client record, an engagement letter, and a billing schedule it can also collect payment against, on its own or through a QuickBooks Online or Xero connection. Beyond that core loop it adds a sales pipeline (Deals), client intake forms, AI-assisted price suggestions, and a revenue and cash-flow reporting dashboard. It's priced around active client count rather than headcount, which is the structural choice that separates it from most of the practice-management category — and there is no client portal, document request workflow, or file exchange anywhere in the product, at any tier.
Pricing at a glance
Four tiers, billed annually by active clients with a signed agreement rather than by headcount: Solo at $39/month (20 clients, 1 user), Core at $99/month (50 clients, 3 users), Pro at $229/month (350 clients, 15 users), and Pro+ at $399/month (600 clients, **20 users** — not unlimited, despite what some older comparisons state). Paying monthly instead costs $49, $149, $279, and $499 respectively — Ignition frames annual billing as an 18-34% discount, and the discount varies by tier rather than being a flat rate. Exceed a tier's included client count and Ignition charges a per-client overage fee instead of forcing an upgrade — $7 on Solo, $5 on Core, $3 on Pro, $2 on Pro+ — and every card or ACH payment it collects for you carries its own processing fee on top of the subscription (roughly 2.5%+$0.30 for a standard card, about 1%+$0.30 for ACH). An Enterprise tier above Pro+ is custom-quoted for multi-office firms.
A client accepts a priced proposal, e-signs the engagement letter, and attaches a payment method in the same flow — Ignition then bills against those terms automatically, whether that's a one-off invoice or a recurring schedule. Reviewers across G2 and TrustRadius consistently credit this for cutting accounts-receivable chasing and reducing the scope creep that comes from undocumented verbal agreements. It's the single workflow the product is built around, and it's the reason firms buy it.
Ease of Use is the single most-cited pro across Ignition's 123 G2 reviews (51 mentions), followed by Easy Setup (33 mentions), and multiple reviewers describe Ignition's own team building their initial proposal templates for them. Core and higher tiers include setup assistance and custom brochure design at signup rather than as a paid onboarding package — a contrast with the multi-week implementations TaxDome and SuiteDash require.
Customer Support is the second most-cited pro on G2 (36 mentions), and the pattern repeats on Trustpilot, where multiple reviewers name their individual account manager and describe fast, hands-on help with template and workflow setup. For a category where support quality varies enormously, that consistency across two independent platforms is a real signal, not a cherry-picked testimonial.
Every tier bundles in multiple users at no extra charge — Core includes 3, Pro includes 15, Pro+ includes 20 — so a firm with more staff than clients-per-head effectively gets those seats free, unlike Karbon or TaxDome's strictly per-user pricing. Run the numbers for your actual ratio before assuming this is cheaper, though: a lean team serving a very large client base can still come out ahead on a per-user tool, since Ignition's per-client overage fee scales in the opposite direction.
Ignition holds 4.7 out of 5 across 123 reviews on G2, 8.5 out of 10 across 17 reviews on TrustRadius, and 4.1 out of 5 across 37 reviews on Trustpilot. The specific complaints vary by platform, but the underlying signal — real users, on three separate review sites, rating the core product highly — is consistent enough to trust.
Ignition's own product navigation covers Proposals, Payments, Contracts and Engagement Letters, Billing, Invoicing, and Reporting — there is no document request workflow, client file upload, or file exchange anywhere in the product, and G2 categorizes it under E-Signature, Billing, and Contract Management rather than any client-portal or document-management category. Firms that assume an 'all-in-one' practice platform includes a place for clients to upload tax documents will need a second tool for that, regardless of which Ignition tier they buy.
Go over a tier's included active-client count and Ignition charges per additional client rather than capping you or forcing a clean upgrade — $7 on Solo, down to $2 on Pro+. Ignition publishes its own help-center article on managing this because it catches firms often enough to need one: a Solo-tier firm that grows from 20 to 30 active clients pays $39 plus 10 x $7, or $109/month, nearly triple the advertised entry price, before ever touching Core's features.
Expensive is the top-ranked con on G2 (16 mentions), and it shows up almost identically on TrustRadius ('gets pretty expensive with additional users,' 'may not be a good fit for smaller firms') and Trustpilot ('on the pricier side'). It bites earlier than the headline $39 Solo price suggests: Solo includes exactly one user, so a two-person practice is already priced into Core at $99/month before adding a single extra client.
Limited Customization and Missing Features are separately tagged cons on G2 (9 mentions each), and the specifics recur: reviewers want more flexible pricing-package options, smoother handling of change orders on signed agreements, and richer online forms (no conditional logic, so they can't fully replace a client intake checklist). None of these is a dealbreaker individually, but they're the same handful of gaps across a large review sample rather than one-off complaints.
Payment Issues is a distinct tagged con on G2 (9 mentions), and it's the one place where the support reputation doesn't fully hold — a Trustpilot reviewer describes a client payment stuck in 'collecting' status for over a week with slow support follow-up. Payment collection is Ignition's core promise, so it's worth stress-testing during the trial rather than assuming it away.
Ignition earns its reputation at the one thing it's built for: turning a proposal into a signed, paid engagement with minimal manual work, and the consistent ratings across G2, TrustRadius, and Trustpilot back that up. The honest caveat is scope, not quality — there is no client portal or document collection anywhere in the product, so firms buying it as a practice-management platform will be disappointed by a gap that was never on the roadmap to begin with. Budget the per-client overage fee before you hit it, price out Core rather than Solo the moment a second person needs a login, and treat Ignition as the tool that closes the sale — not the one that runs the engagement afterward.
Where ClientBrief fits: we don't compete with Ignition across its whole feature set and won't pretend to. ClientBrief does document collection only — send a checklist, clients upload with no account, reminders go out automatically — for a flat $7.99/month with unlimited clients. If that's the specific job you're trying to solve, it costs a fraction of a platform. If you need the rest of what Ignition does, you need Ignition.
Is Ignition worth it?
For firms that want proposals, e-signature, engagement letters, and billing running through one system, yes — it's consistently well-rated (4.7/5 on G2 across 123 reviews) and reviewers credit it with reducing accounts-receivable chasing and scope creep. It's a poor fit if you're evaluating it as a practice-management platform with a client portal, because that feature doesn't exist here at any price.
How much does Ignition cost?
$39/month for Solo (20 clients, 1 user), $99 for Core (50 clients, 3 users), $229 for Pro (350 clients, 15 users), and $399 for Pro+ (600 clients, 20 users), all on annual billing. Monthly billing is $49, $149, $279, and $499 respectively — Ignition calls the annual rate an 18-34% discount, and the percentage varies by tier.
Does Ignition have a client portal?
No. Ignition covers proposals, e-signature, engagement letters, billing, and payment collection — there's no client-facing document request workflow, file upload, or portal in any tier. Its own feature comparison table and G2's category classification (E-Signature, Billing, Contract Management) both confirm this; firms that need document exchange run a separate tool alongside it.
What happens if I exceed my plan's client limit?
Ignition charges a per-client overage fee rather than forcing an upgrade or blocking new clients — $7/month on Solo, $5 on Core, $3 on Pro, and $2 on Pro+ for each active client beyond your tier's included count. It's common enough that Ignition publishes a dedicated help-center article on managing it, so it's worth modeling against your actual client growth rather than just the headline tier price.
Is Ignition the same as Practice Ignition?
Yes. The company rebranded from Practice Ignition to Ignition in March 2022 alongside a platform update, and kept the same core product. Older reviews and comparison articles that reference 'Practice Ignition' are describing the same tool.
What are the main complaints about Ignition?
Cost is the most consistent one — Expensive is G2's top-tagged con (16 mentions), and it recurs on TrustRadius and Trustpilot, especially from solo and small-firm users. Behind that, reviewers tag Limited Customization and Missing Features about equally (9 mentions each on G2), mainly around proposal-pricing flexibility and online-forms logic, plus a smaller cluster of Payment Issues reports (9 mentions) around payment-collection status and processing.
Does Ignition charge payment processing fees on top of the subscription?
Yes. Every card or ACH payment Ignition collects on your behalf carries its own fee regardless of tier: roughly 2.5%+$0.30 for a standard card, more for premium cards, and about 1%+$0.30 (capped around $5) for ACH. Budget this separately from the monthly subscription — it applies to every transaction, not just overage.
Is Ignition good for a solo practitioner?
It can be, at $39/month for 20 active clients and one user, if proposals, e-signature, and automated billing are your actual bottleneck. It gets expensive fast the moment a second person needs a login — that jumps you to Core at $99/month — and it does nothing for document collection, so a solo practitioner whose main pain point is chasing client paperwork rather than chasing signatures won't find the fix here; ClientBrief covers that specific gap for $7.99/month flat, with no proposal or billing features of its own.
What's the difference between Ignition and a practice-management platform like TaxDome?
They only partly overlap. TaxDome bundles a client portal, document requests, e-signature, billing, and workflow into one per-user subscription. Ignition covers proposals, e-signature, engagement letters, and billing priced per active client, but has no client portal or document collection at all. Firms sometimes run both: Ignition for the sales-to-signed-engagement step, something else for the ongoing document exchange that follows.
What are the best Ignition alternatives?
For proposals and e-signature specifically, PandaDoc and Proposify are the closest direct competitors, both with large G2 review samples of their own. For firms that need what Ignition doesn't have — a client portal and document collection — TaxDome and SuiteDash bundle that alongside billing and workflow. If document collection is the only gap you're filling, ClientBrief does that alone for $7.99/month flat, though it has no proposals, e-signature, or billing features — the two tools solve different problems, and firms often run both.