Invoices
Your team's tracked time and contracts become invoices in Uku. Review, approve, and they land inside Merit Aktiva — header, line items, VAT, due date, the lot.
- Header
- Line items
- VAT rate
- Due date
- Reference
Your team tracks the work. Uku turns it into invoices Merit Aktiva gets the same day. No spreadsheets, no missed minutes, no end-of-month panic.
4.8 from 300+ reviews · No credit card required
Uku finds the 15–30% of revenue your Merit Aktiva invoice can't see.
I'd been looking for a practice management solution for my accounting firm for years. Uku was the answer to our problems.
— Christer H., CHK · verified on G2
Merit Aktiva holds the books. Uku runs the practice. Here's exactly what moves between them — and which way. No black boxes.
Your team's tracked time and contracts become invoices in Uku. Review, approve, and they land inside Merit Aktiva — header, line items, VAT, due date, the lot.
Every Merit customer lands in Uku, ready for work. API-driven, no spreadsheet exports.
Your Merit product list becomes Uku billing templates so contracts use your real catalogue.
Uku auto-imports the actual volume of work per client — documents, entries, sales and purchase invoices, bank entries, VAT entries, and more. One interactive report, no switching between clients in Merit.
Imports actual entry counts for last month, including changes inserted into previous periods.
When Merit marks an invoice paid, Uku closes the loop on the same client.
Read-only. You still collect payments in Merit.
Syncs on every invoice export · Re-sync your client list any time.
App Store → Merit Aktiva → enter email and password. Uku auto-creates API keys for each client and imports your customer list.
Set monthly recurrence. Uku imports documents, entries, invoices, bank entries — the actual counts, including changes from previous periods.
Pick the services, set the rates. Add volume pricing if you bill by entry count. Uku starts collecting time and data for you.
Review, hit send. It lands in Merit Aktiva — line items, VAT, due date.
Enter your Merit Aktiva email and password. Uku auto-creates API keys for each client and pulls everyone in — name, email, address, registry code, VAT.
Imported clients are automatically matched against the Estonian Business Register. Missing details get filled in — so your CRM starts complete, not half-empty.
Uku auto-imports the actual volume of work for each client from Merit — documents, entries, sales and purchase invoices, bank entries, VAT entries, and more. No more switching between clients in Merit to count documents.
The numbers land in one interactive report. Uku uses them to bill volume-based contracts automatically — including changes inserted into previous periods. Mix time, fixed, and volume pricing in the same contract.
Review the draft, hit send. Uku pushes the invoice into Merit Aktiva — header, line items, VAT, due date, reference. All of it.
Merit marks it paid? Uku closes the loop on the same client. No double entry. No reconciliation. No spreadsheets in the middle.
Merit knows which invoices are paid. Uku knows the rest. So Uku sends the reminders — politely, on a schedule you set.
Set up two reminders or five. Different templates for 2, 7, and 14 days overdue. Your team stops chasing money and goes back to actual work.
On schedule
Set your own schedule, write your own emails, change the tone any time. Uku runs it. Your team doesn't touch it.
1 year with Uku and we can serve 38% more customers. Couldn't imagine life without Uku.
Uku's team is very helpful in coming up with solutions. In our company, Uku has brought the client closer to accountant while giving both the accountant and management an overview of how much time is spent on what kind of work or communication.
I'd been looking for a practice management solution for my accounting firm for years. Uku was the answer to our problems.
Uku is simple and intuitive and covers anything we might need from a work management system — from tracking time and managing tasks to billing. It has increased efficiency and visibility throughout our team.
Uku is easy to use and accountants actually love working with it.
Uku is the perfect solution for financial services companies unlike any other. Uku team is a pleasure to work with. They're quick to respond and offer adaptations and upgrades to match our needs.
Every question we hear about the Merit integration — and the answer is always the same.
Uku connects to Merit via API key. Add it once in Uku settings and your customer list, products, and invoice counts start flowing — no other setup on the Merit side.
One-way: Merit → Uku. Customers, addresses and registry codes flow from Merit into Uku. We deliberately don't push client edits back — your books stay the single source of truth.
From Merit → Uku: customers, products, purchase and sales invoice counts, payment status. From Uku → Merit: invoices, line items, VAT rates, due dates, references. The "What syncs" section above shows the full picture.
Yes. This is the killer feature of the Merit integration: Merit reports the number of sales and purchase invoices per client per month, and Uku uses that number to bill your volume-based contracts automatically. Stop running invoice-count spreadsheets.
Connecting Merit and importing your customer list takes under 10 minutes. Mapping your services to Uku contracts takes 30–60 minutes depending on how many you have. Our onboarding team will sit on a call with you and do most of it.
No. Nothing leaves Uku until you hit send. There's no background sync running in the dark. You stay in control of every invoice that lands in Merit.
Have a question? Contact us — real people answer.




Elevate your efficiency with the powerful yet easy-to-use accounting practice management software.
"Let's create a dream, where the team is happy, clients are well served and profits are fair." — Rain Allikvee, Co-founder of Uku
