Collections Software for Accounting Firms
Collections software for accounting firms: follow up on monthly, advisory, year end and project invoices to business clients by phone, text and email.
Sia Ghazvinian
Co-Founder & CEO
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Accounting firms spend their days helping clients understand cash flow, and then let their own receivables age because nobody at the firm wants to call a client about a fee. Collections software for accounting firms takes that routine follow-up off the partners so the firm gets paid as reliably as it helps its clients get paid.
Abivo is collections software for accounting firms: its AI agent, Kate, follows up on overdue monthly advisory, bookkeeping, year end and project invoices to business clients by phone, text message and email, straight from your accounting system, and hands anything sensitive to the partner or client manager who owns the relationship.
Best for: CPA firms, accounting practices, bookkeeping firms and outsourced accounting and fractional CFO firms that bill business clients on invoice, and that have more open invoices than the firm administrator or the partners can follow up on each week, especially in busy season.
Is This Also Accounts Receivable Software for CPA Firms and Bookkeeping Practices?
Yes, for the part of accounts receivable that gets invoices paid. Your practice management and accounting systems handle time, engagements, billing and payments. Abivo connects to the accounting system and handles the follow-up on every overdue invoice by phone, text and email. That is the step most CPA firms leave to a partner who is already working late on client deadlines. It works the same way for CPA firms, bookkeeping practices, outsourced accounting firms and advisory practices.
Why Is A/R So Hard for Accounting Firms?
Partners are the relationship, and they do not want to talk about their own fees. The partner is the client's trusted advisor, often for many years. Calling about an overdue invoice feels awkward next to that relationship, so the call waits.
Busy season crowds everything out. In the months when the firm is busiest, nobody has time to follow up on last quarter's invoices. By the time things calm down, those invoices are much older.
Year end work is billed in a lump. Annual financial statements, compliance work and year end close are often billed on completion, after months of effort. A large invoice landing on a small business all at once is easy for the client to put off.
Scope creep is constant. A client arrives with months of unreconciled transactions, asks for an extra entity or wants help with a one-off question. The work gets done, the invoice is higher than last year, and the client questions it.
Your clients are small businesses with their own cash pressure. Many clients run tight, and an accounting fee is one of the bills they feel comfortable delaying, because they know the firm will not push.
What Should Collections Software Do for an Accounting Firm?
Judge any tool against this list:
Work every overdue invoice, including monthly fees. Monthly bookkeeping and advisory invoices are where the count lives, and they slip during busy season.
Keep running when the firm is busiest. Follow-up should not stop because the partners and staff are on deadlines.
Use phone, text and email. An owner who ignores email will often answer a short call or pay from a text with a payment link.
Keep partners out of routine chasing. The partner should hear about a client only when a conversation needs them.
Hand fee questions to the relationship owner. Questions about why a bill is higher than last year go to the partner or client manager, with the history attached.
Sync with your accounting system and log everything, so a partner can see every call and promise to pay before the next client meeting.
Which Invoices Should the Software Chase First?
Chase by invoice type, because each type stalls for a different reason.
Invoice type | Typical size | Why it stalls | What good follow-up does |
|---|---|---|---|
Monthly bookkeeping or outsourced accounting fee | Small to mid, recurring | Client let a month slide, card or bank payment failed | Follows up every month on the same cadence with a payment link |
Advisory or fractional CFO retainer | Mid, recurring | Owner treats it as a flexible bill when cash is tight | Follows up politely and early, asks for a payment date |
Year end or annual engagement fee | Large | Billed on completion, client surprised by the total | Confirms receipt, asks for a payment date, routes any fee question to the partner |
Progress invoice on a long engagement | Mid to large | Client wants to wait until the work is finished | Follows up on the same cadence as other invoices and hands objections to the client manager |
Cleanup, catch-up or out of scope work | Mid | Client did not expect the extra charge | Logs the question and hands it to the partner who agreed to the work |
Ad hoc consulting or one-off project | Small to mid | Low priority for the client, no regular billing rhythm | Follows up like any other invoice so it does not age on its own |
The monthly rows hold the count. The year end and cleanup rows hold the larger balances and most of the questions. Good software covers both and leaves fee conversations with your partners.
How Does Autonomous Follow-Up Work on Accounting Firm Invoices?
An autonomous agent does the follow-up itself. Kate calls the client's owner, controller or bookkeeper, says she is calling on behalf of your firm, confirms the invoice and the work it covers, answers routine questions such as "can you send that to my office manager" or "which month is this for", asks for a PO number if the client uses them, and agrees on a payment date within the rules you set. We walk through a full call in how an AI agent calls customers about overdue invoices.
A typical cadence on an overdue monthly fee:
Day 1 overdue: a friendly email with the invoice and a payment link.
Day 7: a text message to the billing contact.
Day 14: a polite phone call to confirm receipt and get a payment date.
Day 21 onward: calls and emails on a steady rhythm, each one logged in the account history.
At any point: a fee question, a complaint or a request to speak with the partner goes straight to your team.
The cadence keeps running in busy season, which is when it matters most.
How Do You Handle Fee Objections, Cash Strapped Clients and Departing Clients?
Three replies cause most of the friction on accounting firm invoices.
"Why is this higher than last year?" Fee questions are relationship conversations. Software should record the question, pause follow-up on that invoice and hand it to the partner, who can explain the extra work in context.
"Cash is tight right now." Ask when the client can pay, log the date and follow up on it. If the client asks for a payment plan, the account goes to a person. What to offer a struggling client is a decision for your firm, never for software.
"We are moving to another firm." A departing client still owes for work already done. Good follow-up stays polite, confirms what is open and hands the account to the partner as soon as the client wants to discuss it.
What About Teams With Three or More People in Collections, and When Partners Own Client Relationships?
Larger firms often have a billing or firm administration team. They can make calls, but they focus on the largest balances, and monthly fees from smaller clients wait. And in many firms, partners would rather nobody else called their clients about fees.
An AI agent changes the split. Kate covers every overdue invoice on a set cadence, and your billing team handles the accounts that need judgment. For clients a partner wants to keep close, Kate takes the routine reminder and hands anything sensitive straight to the partner. The partner stays the trusted advisor, and the follow-up still happens.
What About QuickBooks, Xero and the Rest of Your Stack?
Many accounting firms track time and engagements in a practice management system that posts invoices to an accounting system. Abivo connects to the accounting system: Kate reads open invoices and aging, follows up, and logs every conversation and promise to pay, so your books stay the source of truth. Integrations include QuickBooks, Xero, NetSuite, Sage Intacct, Microsoft Dynamics 365 Business Central and Chargebee, and a CSV upload covers anything else, including exports from your practice management system. Details are on the product page.
What Results Should an Accounting Firm Expect?
Results depend on how old your overdue invoices are, how many clients have a working billing contact on file, and how much of your billing lands at year end.
The closest proof is in service companies. OFS Group, a fire safety and appliance repair service company, put its overdue ledger in front of Kate and collected $842,518 in four months, with DSO down by more than 30 days. OFS is not an accounting firm, but it had the same core problem: more open invoices to business clients than the office could follow up on. We would still rather play you real call recordings than promise a number for your ledger.
What Should You Measure After Switching?
Share of invoices over 60 days, by invoice type. Monthly fees should fall first.
Aging through busy season. Whether overdue invoices still get followed up when the firm is busiest.
Contact coverage. How many clients have a working billing email and phone number on file.
Escalations by reason. Fee questions, cash flow, cleanup work and departing clients, each counted.
Promises kept: clients who paid by the date they gave.
Partner time on collections. It should fall the most.
Practical Takeaways for Accounting Firms
Take routine follow-up off partners. They should hear about a client only when it needs them.
Put monthly fees on autopay or a payment link, and catch failures in the first week.
Bill long engagements in progress, not only on completion.
Keep fee conversations with the partner who owns the client.
Ask any vendor to let you hear real calls.
For the wider picture, see our guides to bookkeeping, accounting and advisory services and getting professional services clients to pay on time, and our comparison of the best AI AR collections software in 2026.
Frequently Asked Questions
What is the best collections software for accounting firms?
Look for software that follows up on every overdue invoice by phone, text and email, covers monthly, year end and project invoices, keeps running through busy season, hands fee questions to the partner, and syncs with your accounting system. Abivo does this with an AI agent, Kate, that follows up on its own and hands sensitive accounts to your team.
How can an accounting firm get paid faster?
Bill monthly work on autopay or with a payment link, invoice long engagements in progress, explain extra work before the invoice goes out, and follow up on every overdue invoice every week. Abivo automates that follow-up so it happens even in busy season.
Is collections software the same as accounts receivable software?
Collections software is the part of accounts receivable software that gets overdue invoices paid. Abivo focuses on that part and connects to the accounting system that handles the rest.
Does it work for CPA firms and bookkeeping practices?
Yes. Abivo works from the accounting system where your firm's invoices land, or from a CSV export, and follows up on every overdue fee to your business clients.
Will our clients mind hearing from an AI agent?
Kate is polite, says she is calling on behalf of your firm and sticks to the invoice. Any client who pushes back, and any account a partner wants to handle personally, goes to a person.
How quickly can an accounting firm start?
Connect your accounting system or upload a CSV, start with a defined set of overdue invoices, and expand from there. Starting before busy season is easiest.
If your fees are aging while your team is busy keeping clients' books in order, see what an AI collections agent can do. Get Started with Abivo.
