OpenPhone vs KrispCall for Boutique Consulting Firms

At a small firm, the honest answer is often "whoever isn't in a client meeting right now," and that changes hour to hour. OpenPhone's shared number model fits that reality: the line rings to a group, any available partner or associate can pick it up from a phone or laptop, and whoever answers can see in the thread whether this contact has called before and what was discussed.

KrispCall can be configured with call distribution rules too, but it works better when you already know who should answer a given line, a dedicated business development number routed to one person, for example, rather than a general line where availability genuinely shifts by the hour.

Most prospective clients calling a boutique firm cold don't leave a voicemail if the first attempt goes unanswered; they call the next firm on their list instead. A consulting engagement is a meaningfully sized sale, so losing one at the first phone call, before any pitch even happens, is a worse outcome than most partners realize when they shrug off a missed call as routine.

The median accountant or auditor earns $83,680 a year¹, a rough proxy for the kind of skilled hourly labor a consulting engagement bills out, which puts the lost opportunity cost of a single missed intake call well above whatever a phone system costs per month.

Build the routing before someone is on a plane, not after a client complains. A workable setup: the main number rings a small group of partners and senior associates during business hours, forwards to a receptionist or answering service after hours if the firm has one, and every voicemail transcribes and lands in a shared inbox rather than one person's personal mailbox. Test it by having someone call in while the usual answerer is deliberately unavailable, and confirm the call actually reaches someone else.

A workable coverage setup looks like this:

1. Ring the main number to a small group of partners and senior associates during business hours.
2. Forward it after hours to a receptionist or answering service, if the firm has one.
3. Transcribe every voicemail and deliver it to a shared inbox rather than one person's personal mailbox.
4. Test the routing before anyone is on a plane, then again after each staffing change.

A firm running a handful of numbers, one for the managing partner, one for business development, one for a specific practice area, each with a clear single owner, doesn't need OpenPhone's shared inbox model as much as it needs low per-line cost. KrispCall works well there, and its ability to add an international number cheaply also helps a firm doing occasional work with overseas clients who are more likely to answer a familiar area code.

Ask how many of your firm's numbers genuinely need more than one person able to answer them. If most of your lines are already tied to one named partner and rarely need backup coverage, KrispCall's lower cost per seat is the more defensible choice. If your main intake line is the one that's supposed to represent the whole firm and currently depends on whoever remembers to check voicemail, that's the number OpenPhone's shared inbox is built to fix first.

A firm that runs both patterns doesn't have to pick one platform for everything. Say a firm keeps its managing partner's direct line on KrispCall for its low cost and moves only the general intake number to OpenPhone; that split solves the actual coverage gap without paying for shared-inbox features on lines that never needed them.

A one-partner firm can get away with a personal cell phone doubling as the business line, since there's no coverage gap to solve when there's only one person to cover. The moment a firm hires its first associate or a second partner joins, that stops being true: now a caller might reach someone who has no context on the relationship, and the associate has no way to check whether the partner already handled it.

This is the point where most small firms should move their main number off a personal cell and onto a real shared platform, well before the firm feels large enough to justify it. Waiting until the firm has ten people and a formal answering protocol means several years of avoidable missed calls in between.