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Clients & sales

  • Client managementClient details, company and VAT numbers, payment terms
  • Intake formCollect details from a potential customer and continue yourself to a lead
  • LeadsTrack potential customers through to a quote and won work
  • Client portalShare quotes, contracts, invoices and project information with your client
  • QuotesCreate, send and convert a quote into an invoice
  • ContractsService agreement with digital signature
  • Assignment checkIs a job worth it? Check before you say yes

Work & projects

  • ProjectsFrom signed contract to a project with time and costs
  • Project tasksTasks, deadlines and logged hours inside a project
  • Project profitabilityInvoiced and collected revenue, direct costs and margin on one project
  • Time trackingLog hours per client or project and bill them
  • Mileage logKeep business trips with a rate per kilometre
  • Products & servicesSave price and VAT once, reuse everywhere

Invoicing & admin

  • InvoicesInvoices with Dutch VAT, numbering and PDF
  • Recurring invoicesDraft invoices generated monthly, quarterly or yearly
  • Payment remindersReminders before and after the due date
  • ExpensesBusiness costs with VAT, category and receipt
  • Purchase invoicesKeep supplier invoices with their file attached
  • Bank CSV importImport a statement and match payments to invoices

Tax & bookkeeping

  • Financial overviewIncome, expenses and open invoices per period or client
  • Tax calculatorIndicative estimate of tax and net income
  • Bookkeeper packageExport and secure share link for your bookkeeper
  • Hourly rate calculatorFree: work out the hourly rate you need
  • Hours criterion calculatorFree: do you reach the 1,225 hours for entrepreneur deductions?

Documents

  • Multilingual invoicesDocuments in 7 languages, set per client
  • CV makerFreelance CV or portfolio with a shareable link
View all tools

Popular

  • Freelancers (ZZP)
  • Construction
  • Cleaning
  • Consultants
  • Coaches
View all industries
Pricing
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←Home

Clients & sales

  • Client managementClient details, company and VAT numbers, payment terms
  • Intake formCollect details from a potential customer and continue yourself to a lead
  • LeadsTrack potential customers through to a quote and won work
  • Client portalShare quotes, contracts, invoices and project information with your client
  • QuotesCreate, send and convert a quote into an invoice
  • ContractsService agreement with digital signature
  • Assignment checkIs a job worth it? Check before you say yes

Work & projects

  • ProjectsFrom signed contract to a project with time and costs
  • Project tasksTasks, deadlines and logged hours inside a project
  • Project profitabilityInvoiced and collected revenue, direct costs and margin on one project
  • Time trackingLog hours per client or project and bill them
  • Mileage logKeep business trips with a rate per kilometre
  • Products & servicesSave price and VAT once, reuse everywhere

Invoicing & admin

  • InvoicesInvoices with Dutch VAT, numbering and PDF
  • Recurring invoicesDraft invoices generated monthly, quarterly or yearly
  • Payment remindersReminders before and after the due date
  • ExpensesBusiness costs with VAT, category and receipt
  • Purchase invoicesKeep supplier invoices with their file attached
  • Bank CSV importImport a statement and match payments to invoices

Tax & bookkeeping

  • Financial overviewIncome, expenses and open invoices per period or client
  • Tax calculatorIndicative estimate of tax and net income
  • Bookkeeper packageExport and secure share link for your bookkeeper
  • Hourly rate calculatorFree: work out the hourly rate you need
  • Hours criterion calculatorFree: do you reach the 1,225 hours for entrepreneur deductions?

Documents

  • Multilingual invoicesDocuments in 7 languages, set per client
  • CV makerFreelance CV or portfolio with a shareable link
View all tools

Popular

  • Freelancers (ZZP)
  • Construction
  • Cleaning
  • Consultants
  • Coaches
View all industries
SSmartWerk
  1. Home
  2. Who it’s for
  3. Installers

Software for installers: installation projects and regular maintenance clients

Installers

A new installation runs through quote, contract and project. The maintenance afterwards you set up as a recurring invoice.

Start for freeView pricing

Start free, no credit card.

Quote2026-018Accepted
MDMeridian Design05-10-2026
Huisstijl ontwerp€ 1,800.00
Website redesign€ 2,400.00
Total€ 5,082.00
Convert to invoice
01

Installers often have two revenue models side by side. There is the installation, a job of days or weeks with material and hours. And there is maintenance: an annual check or a subscription for a boiler or air conditioner that comes back every year.

02

SmartWerk has a route for both. The installation goes from quote to contract to project. Maintenance becomes a recurring invoice that prepares a draft invoice on a schedule. What does not happen: SmartWerk does not schedule your routes or maintenance visits.

Where it goes wrong in practice

  • An installation is more than one invoice

    You start with a quote, record agreements and keep track of hours and material during the build. That has to stay together.

  • Maintenance you invoice again every year

    For regular clients you make the same invoice every year. Forget one and income goes missing.

  • Parts from several suppliers

    You buy from different wholesalers. Their invoices must be findable, apart from loose receipts.

  • Agreements about maintenance

    What falls under the subscription and what does not? Without a recorded agreement there is discussion.

How a job moves through SmartWerk

Every step is an existing SmartWerk feature; click through for the details.

  1. 1

    Quote for the installation

    A quote with lines for labour, material and any equipment.

  2. 2

    Record the agreement

    You record the agreements and have your client sign them.

  3. 3

    Project for the execution

    The project bundles hours, trips and costs of one installation.

  4. 4

    Hours on location

    Record hours, per job and per client.

  5. 5

    Materials and parts

    Expenses with receipt.

  6. 6

    Invoice for the installation

    Make the invoice from the project or from the accepted quote.

  7. 7

    Maintenance as a recurring invoice

    A draft per month, quarter or year; you review it and send it.

The tools that matter most here

  • ContractsA contract records what the installation includes and what it does not.Service agreement with digital signature
  • ProjectsA project keeps an installation of weeks together.From signed contract to a project with time and costs
  • Recurring invoicesRecurring invoices for maintenance subscriptions on a schedule.Draft invoices generated monthly, quarterly or yearly
  • Time trackingHours per job, also for maintenance visits.Log hours per client or project and bill them
  • ExpensesExpenses with receipt and VAT for smaller purchases.Business costs with VAT, category and receipt
  • Purchase invoicesInvoices from several wholesalers in one place, with the file attached.Keep supplier invoices with their file attached
  • InvoicesOne invoice from the project or the quote.Invoices with Dutch VAT, numbering and PDF
  • Client portalThe client or property manager opens one link with the quote, maintenance contract and invoices, so you do not keep re-emailing the same documents.Share quotes, contracts, invoices and project information with your client

Why this fits SmartWerk

01

Installation and maintenance

The same client first gets a project and then a recurring invoice. Both sit in the same client list.

Bakkerij Van DijkWebsite & webshopIn progress
Hours64 hCosts€ 420Invoiced€ 4,800
HoursTripsCosts
02

No direct debit

A recurring invoice is a draft you send yourself. SmartWerk does not take money from your client’s account.

SSStudio SanneKvK 84726193 · NL002187364B21Invoice2026-041
ClientBakkerij Van DijkDue date22-10-2026
Website onderhoud8 × € 85€ 680.00
Fotografie productpagina’s1 × € 320€ 320.00
Subtotal€ 1,000.00VAT 21%€ 210.00Total€ 1,210.00
NL91 ABNA 0417 1643 00
03

Planning stays elsewhere

SmartWerk does not schedule fitters or maintenance visits. It handles the administration of your jobs.

SSStudio SanneKvK 84726193 · NL002187364B21Invoice2026-041
ClientBakkerij Van DijkDue date22-10-2026
Website onderhoud8 × € 85€ 680.00
Fotografie productpagina’s1 × € 320€ 320.00
Subtotal€ 1,000.00VAT 21%€ 210.00Total€ 1,210.00
NL91 ABNA 0417 1643 00

Example — fictional

An installer with a new boiler and a maintenance subscription

Example: an installer fits a new boiler. He sends a quote, records the agreements in a contract and starts a project. After the installation he makes the invoice.

For the annual maintenance he sets up a recurring invoice. Every year a draft is in his list that he reviews and sends.

Frequently asked questions

Can I invoice a maintenance subscription automatically?

SmartWerk creates a draft invoice on your schedule (monthly, quarterly or yearly). You review and send it yourself. There is no direct debit.

Do I need contracts and projects?

No, that is not required. Recurring invoices, hours and invoices also work without a contract or project.

Do recurring invoices count towards my monthly limit?

Yes. They belong to the same monthly limit as ordinary invoices.

Can I schedule maintenance visits?

No. SmartWerk is not a scheduling tool; you record the administration.

SmartWerk is invoicing and administration software for self-employed people, not a full accounting package and not a replacement for your bookkeeper or adviser.

All industries → All tools →

Try it with your own clients

Create a free account and start with one client. Upgrading can wait until you really need a feature.

Start for freeView pricing
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