The Consultant's Software Stack: CRM + Scheduling + Invoicing

The Complete Consultant Stack

Monthly Cost Breakdown

CRM: Where Your Client Relationships Live

HubSpot Free CRM ($0/mo)gives you unlimited contacts, a basic deal pipeline, email logging, and meeting scheduling. The free tier is genuinely generous — no time limit, no contact cap. The catch: email sequences require Starter at $20/seat/mo, and the jump to Professional is $890/mo flat.

Pipedrive Lite ($14/seat/mo) is purpose-built for deal tracking. The visual pipeline makes it easy to see every prospect at a glance. You get 3,000 deals, 30 custom fields, and lead/deal management. It lacks a free tier but is simpler and faster than HubSpot for pure sales workflows.

The decision: If you manage fewer than 50 active relationships and want $0/mo, start with HubSpot Free. If you close deals through a visual pipeline and want something focused, Pipedrive Lite at $14/seat/mo is worth every penny.

Scheduling: Stop the Email Ping-Pong

Calendly Free ($0/mo)gives you 1 event type and 1 calendar connection. For most consultants starting out, one “30-minute discovery call” event type is enough. Calendly Standard ($12/user/mo) unlocks unlimited event types, group events, and workflows.

Cal.com Free ($0/mo)gives you unlimited event types and unlimited bookings for free. It's open source, so you can even self-host. The trade-off is a slightly less polished UX than Calendly, but the value at $0 is hard to beat.

The decision: If you need one event type and want the most recognized brand, Calendly Free works. If you need multiple event types (discovery call, strategy session, check-in) without paying, Cal.com Free is the clear winner.

Invoicing: Get Paid Without Overpaying for Software

Wave Starter ($0/mo)offers unlimited invoicing and basic accounting for free. Manual bank entry only on the free plan — automatic bank imports require Wave Pro at $16/mo. Payment processing is 2.9% + $0.60 per credit card transaction. For consultants who send fewer than 20 invoices a month, Wave is genuinely free and genuinely useful.

FreshBooks Lite ($23/mo) is invoicing-first accounting with time tracking, expense tracking, and a client portal. Limited to 5 billable clients on Lite. If you need to track billable hours and send polished proposals, FreshBooks justifies the $23/mo. FreshBooks Plus ($43/mo) raises the limit to 50 clients.

The decision: Wave if you invoice monthly and want $0/mo. FreshBooks if you bill hourly and need time tracking integrated with invoicing.

What to Skip

• Salesforce: Built for 50-person sales teams, not solo consultants. Minimum $25/user/mo, realistically $75+/user with add-ons. Overkill by a factor of 10.
• QuickBooks Online: Starts at $30/mo. Unless you have inventory or need payroll, Wave does what consultants need for free.
• HubSpot Professional ($890/mo): Consultants who hit HubSpot Free's limits should upgrade to Pipedrive Lite ($14/seat) or HubSpot Starter ($20/seat), not jump to Professional.
• Acuity Scheduling: Now bundled with Squarespace. Unless you already pay for Squarespace, Calendly or Cal.com are better standalone options.
• Project management tools (at first): A shared Google Doc or Notion free page is enough until you have 5+ concurrent clients.

Common Mistakes Consultants Make

• Buying a CRM before having clients. Use a spreadsheet until you have 20+ contacts worth tracking. Then move to HubSpot Free.
• Paying for scheduling before needing it. Cal.com gives unlimited event types free. Test demand before paying for Calendly Standard ($12/mo).
• Choosing FreshBooks when Wave is enough. If you bill project-based (not hourly), Wave's free invoicing is all you need. FreshBooks time tracking only matters for hourly billing.
• Over-investing in automation too early. Zapier and Make are powerful, but consultants with fewer than 10 clients don't need workflow automation. The time spent setting it up exceeds the time it saves.
• Upgrading HubSpot instead of switching. The path from HubSpot Free to Starter ($20/seat) is reasonable. The path to Professional ($890/mo) is not. Switch to Pipedrive + ActiveCampaign before spending $890/mo.

Frequently Asked Questions

Do I need a CRM if I only have 5 clients?

Probably not. A spreadsheet works until you have 20+ contacts at various stages. But HubSpot Free costs $0, so there's no financial reason not to start early — just don't spend hours customizing it before you have deal flow.

Can I use Calendly Free long-term?

Yes, if 1 event type is enough. Most consultants eventually want separate booking links for discovery calls, paid sessions, and check-ins — which requires Standard ($12/user/mo) or a free switch to Cal.com.

Is Wave really free?

Wave Starter is genuinely free for invoicing and basic accounting. They make money on payment processing (2.9% + $0.60 per transaction) and the optional Pro plan ($16/mo) for automatic bank imports. The free plan requires manual bank entry.

When should I switch from Wave to FreshBooks?

When you bill hourly and need integrated time tracking, or when you want a client portal for project collaboration. FreshBooks Lite at $23/mo is specifically designed for service businesses that track time.

What about proposal software?

For most consultants, a well-formatted Google Doc or Notion page works fine. If you send 10+ proposals monthly, PandaDoc or Better Proposals can improve close rates — but that's a later optimization, not a starting need.