For service firms

Manage retainers and monthly billing cycles with ease.

Professional services firms run on distinct billing models. Whether you charge fixed fees, bill for time and materials, or hold client retainers against future work, our free accounting software keeps your ledgers accurate and your cash flow clear.

  • Bill time and materials
  • Account for client retainers
  • Recover firm disbursements

Free forever · No credit card required · Add modules anytime

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Flexible invoicing

Create detailed invoices for fixed fee milestones or itemise your time and materials. Send them directly to clients via email or WhatsApp to keep your monthly billing cycle moving.

Expense recovery

Log your firm disbursements and out-of-pocket costs as expenses. Add these directly to your next client invoice to ensure you recover costs accurately.

Recurring monthly retainers

Set up recurring invoices for clients on fixed monthly retainers. Automate your billing cycle so you never miss a scheduled charge for your ongoing advisory services.

Retainer accounting

Post journal entries to hold client deposits as liabilities. Recognise the revenue only when the work is actually completed and billed against the retainer.

Project proposals

Draft professional quotations for new engagements. Outline your scope of work, fixed fee milestones, and expected disbursements before the client signs the contract.

Margin reporting

Generate profit and loss statements to track the financial health of your firm. Understand which service lines yield the best margins after accounting for overheads.

Billing models

Invoice for time, materials, or fixed milestones

Service firms rarely use a single billing method. You might charge a fixed fee for a specific deliverable, while billing another client strictly for time and materials. Paper & Pen allows you to structure your invoices to match the engagement. Add custom line items to detail the hours worked and your hourly rate, or list fixed project milestones. While our software does not include built-in time tracking or project management tools, it provides the exact financial documents you need to turn your external timesheets into payable invoices at the end of the month.

  • Itemise hours and billing rates
  • Invoice for fixed fee deliverables
  • Send via email or WhatsApp link
  • Track unpaid client invoices with ease
Paper & Pen

الفواتير

4 فواتير · مايو 2026

فاتورة جديدة
العميل التاريخ المبلغ الحالة
Northwind Trading Co. 12 مايو 2026 $4,820.50 مدفوعة
Harbour Point Ltd 09 مايو 2026 $12,500.75 متأخرة
Cedar Clinic Group 05 مايو 2026 $2,140.25 مدفوعة
Studio Meridian 02 مايو 2026 $863.40 مسودة
الإجمالي $20,324.90
Paper & Pen

Invoices

4 invoices · May 2026

New invoice
Customer Date Amount Status
Northwind Trading Co. 12 May 2026 $4,820.50 Paid
Harbour Point Ltd 09 May 2026 $12,500.75 Overdue
Cedar Clinic Group 05 May 2026 $2,140.25 Paid
Studio Meridian 02 May 2026 $863.40 Draft
Total $20,324.90
Paper & Pen

चालान

4 चालान · मई 2026

नया चालान
ग्राहक तारीख राशि स्थिति
Northwind Trading Co. 12 मई 2026 $4,820.50 भुगतान हुआ
Harbour Point Ltd 09 मई 2026 $12,500.75 बकाया
Cedar Clinic Group 05 मई 2026 $2,140.25 भुगतान हुआ
Studio Meridian 02 मई 2026 $863.40 ड्राफ़्ट
कुल $20,324.90
Paper & Pen

চালান

4 চালান · মে 2026

নতুন চালান
ক্রেতা তারিখ পরিমাণ অবস্থা
Northwind Trading Co. 12 মে 2026 $4,820.50 পরিশোধিত
Harbour Point Ltd 09 মে 2026 $12,500.75 বকেয়া
Cedar Clinic Group 05 মে 2026 $2,140.25 পরিশোধিত
Studio Meridian 02 মে 2026 $863.40 খসড়া
সর্বমোট $20,324.90
Paper & Pen

انوائسز

4 انوائسز · مئی 2026

نئی انوائس
کسٹمر تاریخ رقم حالت
Northwind Trading Co. 12 مئی 2026 $4,820.50 ادا شدہ
Harbour Point Ltd 09 مئی 2026 $12,500.75 واجب الادا
Cedar Clinic Group 05 مئی 2026 $2,140.25 ادا شدہ
Studio Meridian 02 مئی 2026 $863.40 مسودہ
کل $20,324.90

Client deposits

Manage retainers and work in progress accurately

When clients pay a retainer upfront, that money is not yet earned revenue. It is a liability held against future work. Our general ledger lets you post manual journal entries to account for client deposits correctly. As your team completes the work, you can recognise the earned revenue and draw down the retainer balance. You can also account for work in progress that is earned but not yet billed, ensuring your balance sheet reflects the true financial position of your firm before the monthly billing cycle concludes.

  • Record client retainers as firm liabilities
  • Draw down balances with journal entries
  • Account for unbilled work in progress
  • Keep your balance sheet accurate
Paper & Pen

الفواتير

4 فواتير · مايو 2026

فاتورة جديدة
العميل التاريخ المبلغ الحالة
Northwind Trading Co. 12 مايو 2026 $4,820.50 مدفوعة
Harbour Point Ltd 09 مايو 2026 $12,500.75 متأخرة
Cedar Clinic Group 05 مايو 2026 $2,140.25 مدفوعة
Studio Meridian 02 مايو 2026 $863.40 مسودة
الإجمالي $20,324.90
Paper & Pen

Invoices

4 invoices · May 2026

New invoice
Customer Date Amount Status
Northwind Trading Co. 12 May 2026 $4,820.50 Paid
Harbour Point Ltd 09 May 2026 $12,500.75 Overdue
Cedar Clinic Group 05 May 2026 $2,140.25 Paid
Studio Meridian 02 May 2026 $863.40 Draft
Total $20,324.90
Paper & Pen

चालान

4 चालान · मई 2026

नया चालान
ग्राहक तारीख राशि स्थिति
Northwind Trading Co. 12 मई 2026 $4,820.50 भुगतान हुआ
Harbour Point Ltd 09 मई 2026 $12,500.75 बकाया
Cedar Clinic Group 05 मई 2026 $2,140.25 भुगतान हुआ
Studio Meridian 02 मई 2026 $863.40 ड्राफ़्ट
कुल $20,324.90
Paper & Pen

চালান

4 চালান · মে 2026

নতুন চালান
ক্রেতা তারিখ পরিমাণ অবস্থা
Northwind Trading Co. 12 মে 2026 $4,820.50 পরিশোধিত
Harbour Point Ltd 09 মে 2026 $12,500.75 বকেয়া
Cedar Clinic Group 05 মে 2026 $2,140.25 পরিশোধিত
Studio Meridian 02 মে 2026 $863.40 খসড়া
সর্বমোট $20,324.90
Paper & Pen

انوائسز

4 انوائسز · مئی 2026

نئی انوائس
کسٹمر تاریخ رقم حالت
Northwind Trading Co. 12 مئی 2026 $4,820.50 ادا شدہ
Harbour Point Ltd 09 مئی 2026 $12,500.75 واجب الادا
Cedar Clinic Group 05 مئی 2026 $2,140.25 ادا شدہ
Studio Meridian 02 مئی 2026 $863.40 مسودہ
کل $20,324.90

Cost recovery

Recover client disbursements at cost

Lawyers, consultants, and agencies frequently incur costs on behalf of their clients. Whether these are travel expenses, filing fees, or third-party vendor costs, you need a reliable way to recover these disbursements. Log every out-of-pocket cost in the expenses module as soon as it occurs. When your monthly billing cycle arrives, you can review these logged expenses and add them to the client's invoice. This ensures you recover disbursements at cost without letting small expenses slip through the cracks and erode your firm's profit margins.

  • Log your out-of-pocket expenses immediately
  • Categorise costs by client or project
  • Add disbursements to monthly invoices
  • Protect your firm profit margins
Paper & Pen

الفواتير

4 فواتير · مايو 2026

فاتورة جديدة
العميل التاريخ المبلغ الحالة
Northwind Trading Co. 12 مايو 2026 $4,820.50 مدفوعة
Harbour Point Ltd 09 مايو 2026 $12,500.75 متأخرة
Cedar Clinic Group 05 مايو 2026 $2,140.25 مدفوعة
Studio Meridian 02 مايو 2026 $863.40 مسودة
الإجمالي $20,324.90
Paper & Pen

Invoices

4 invoices · May 2026

New invoice
Customer Date Amount Status
Northwind Trading Co. 12 May 2026 $4,820.50 Paid
Harbour Point Ltd 09 May 2026 $12,500.75 Overdue
Cedar Clinic Group 05 May 2026 $2,140.25 Paid
Studio Meridian 02 May 2026 $863.40 Draft
Total $20,324.90
Paper & Pen

चालान

4 चालान · मई 2026

नया चालान
ग्राहक तारीख राशि स्थिति
Northwind Trading Co. 12 मई 2026 $4,820.50 भुगतान हुआ
Harbour Point Ltd 09 मई 2026 $12,500.75 बकाया
Cedar Clinic Group 05 मई 2026 $2,140.25 भुगतान हुआ
Studio Meridian 02 मई 2026 $863.40 ड्राफ़्ट
कुल $20,324.90
Paper & Pen

চালান

4 চালান · মে 2026

নতুন চালান
ক্রেতা তারিখ পরিমাণ অবস্থা
Northwind Trading Co. 12 মে 2026 $4,820.50 পরিশোধিত
Harbour Point Ltd 09 মে 2026 $12,500.75 বকেয়া
Cedar Clinic Group 05 মে 2026 $2,140.25 পরিশোধিত
Studio Meridian 02 মে 2026 $863.40 খসড়া
সর্বমোট $20,324.90
Paper & Pen

انوائسز

4 انوائسز · مئی 2026

نئی انوائس
کسٹمر تاریخ رقم حالت
Northwind Trading Co. 12 مئی 2026 $4,820.50 ادا شدہ
Harbour Point Ltd 09 مئی 2026 $12,500.75 واجب الادا
Cedar Clinic Group 05 مئی 2026 $2,140.25 ادا شدہ
Studio Meridian 02 مئی 2026 $863.40 مسودہ
کل $20,324.90

Questions

Everything you need to know

Does Paper & Pen include time tracking for my staff?
No, Paper & Pen focuses strictly on accounting and invoicing. We do not offer built-in time tracking, timesheets, or project management features. You will need to track your billable hours in a separate tool, and then use our software to generate the final invoices, log disbursements, and manage the general ledger.
How do I handle client retainers in the software?
You can manage retainers using our general ledger. When a client pays a deposit, you post a journal entry to record the cash and create a liability account for the unearned retainer. Once you complete the work and issue an invoice, you post another journal entry to move the funds from the liability account to earned revenue.
Can I bill for both fixed fees and hourly work?
Yes. Your invoices are completely customisable to fit your specific engagement contracts. You can create line items for fixed fee milestones, and add separate line items on the exact same invoice to bill for time and materials. Just enter the number of hours in the quantity field and your hourly rate in the price field. This flexibility supports complex professional services billing.
How do I account for work in progress that is not yet billed?
Work in progress represents services you have performed but have not yet invoiced to the client. To keep your financial statements accurate before the monthly billing cycle, you can use the manual journal entry feature. This allows you to recognise the accrued revenue and the corresponding unbilled receivables asset on your balance sheet until the actual invoice is generated.

Organise your firm's billing and accounting

Manage your client retainers, recover your disbursements, and streamline your monthly invoicing cycles with our free cloud accounting software today.

Free forever · No credit card required · Add modules anytime