Signal support income offset assistance

Stichting Inlichtingenbureau

Someone with social assistance benefit and (also) income from employment or another benefit will receive less benefit under the Participation Act. Excess benefit payments can also be reclaimed. To get a good overview of this income, municipalities can request information from Stichting Inlichtingenbureau (IB)*.

Last change on 5th of August 2025, at 13:09 (CET) | Publication Standard 1.0

• Publication category: Impactful algorithms
• Impact assessment: DPIA
• Status: In use

General information

Theme

Social Security

Begin date

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Contact information

* De officiële, statutaire naamswijziging van Stichting Inlichtingenbureau naar Bureau InformatieDiensten Nederland (BIDN) volgt op een later moment. Tot die tijd gebruiken we in officiële documentatie de naam Stichting Inlichtingenbureau (IB). https://www.bidn.nl/over-ons

Link to publication website

https://www.bidn.nl/ondersteuning-inkomstenverrekening-bijstand

Responsible use

Goal and impact

Does someone have an assistance benefit and also income from work or another benefit?

Then, according to the Participation Act, this income must be offset against the social assistance benefit. Sometimes this income even has to be repaid.

The Income Settlement Assistance (OIB) signal helps municipalities with this. It provides insight into extra income of people on social security benefits. Municipalities can thus ensure that:

• all extra income (including corrections) is known;
• the correct amount is deducted from the benefit.

The signal OIB helps municipalities to check whether residents fulfil their obligation to provide information. The algorithm also supports the municipality in determining whether the declared income is correct. With this information, municipalities can work faster. For people on welfare benefits, the advantage is that they can better estimate how much income they have. They are also less likely to have to repay money.

Considerations

The 'Signal support income offset assistance' is part of the information service Samenloopsignalering (see algorithm 'Samenloopsignalering'). Here, only the specific points are explained about 'Signal support income settlement assistance'.

The municipality should check that residents report their income on time and correctly.

This is important so that the municipality can offset this income against the social assistance benefit.

An algorithm is used for this purpose. This algorithm ensures that the municipality only receives data from residents with social assistance benefits.

This protects the privacy of citizens. An advantage of this algorithm is that it works much faster than when someone does it by hand. This saves a lot of time for municipal employees. Also, fewer mistakes are made this way.

Human intervention

For the IB itself, this algorithm does not involve human intervention. The algorithm executes rules devised by humans and is not 'self-learning'.

However, the IB does ensure that the processing process has been done properly.

The municipality decides whether and how to deal with a change.

Risk management

Citizen privacy is a major concern. That is why we periodically check whether there are risks and what can be done about them. This is called privacy impact assessment (PIA).

Legal basis

The offsetting of income earned against the social assistance benefit is part of the Regularity Check on the assistance. The processing of personal data as part of the information service 'Regularity Check' has the following basis(s):

Basis processing UWV (source)

- Sections 64(1)(b) and 68 of the Participation Act

- Article 45(1)(b) IOAW

- Article 45(1)(b) IOAZ

- Section 33(2)(a) to (c) and (9) j° Section 62 of the Work and Income Implementation Structure Act (SUWI Act)

Basis for processing Tax and Customs Administration (source)

- Section 64, first paragraph, under c, and fourteenth paragraph, Section 68, Participation Act

- Section 45(1)(c) and (12), IOAW

- Section 45(1)(c) and (12), IOAZ

Basis of processing IB:

- Sections 64(3) and 68, Participation Act

- Section 63 SUWI Act, Section 5.24, paragraphs 1 and 3, SUWI Decree & Sections 6.2 and 6.6 SUWI Regulation

- Covenant, Service Agreements (SA) and Technical Agreements and Procedures (TAP)

Basis of processing Municipalities:

- Chapter 5 'Implementation' and Chapter 6 'Powers and facilities municipalities' Participation Act

- Article 62 SUWI Act

See also the Data Register. Processing Activities Act SUWI / Participation Act on the IB website to be found via the following page: https://www.bidn.nl/privacy-beleid

Links to legal bases

Participatiewet: https://wetten.overheid.nl

Link to Processing Index

https://www.bidn.nl/privacy-beleid

Impact assessment

Data Protection Impact Assessment (DPIA): https://www.bidn.nl/privacy-beleid

Operations

Data

The municipality's benefit file (A):

Use is made of the existing delivery files Legality. For this, see the algorithm "Samenloopsignalering".

The demand file to UWV (B):

- BSN

- Start date of reference period

- End date of reference period (end of current month in which the enquiry takes place)

The response file to UWV (C):

- BSN

- Start date of period,

- Reference period end date

- LA BSN

- LA Income relationship number

- LA Date start income relationship, End income relationship

- LA Payroll tax number

- LA Name of administrative unit

- Date start income period, end income period

- LA Code nature of employment relationship

- LA Date of start of income period, end of income period

- LA Code nature of employment relationship

- LA Code wage tax table

- LA Code type of income relationship

- LA Indication wage tax deduction

- LA Date of start of income statement, end of income statement

- LA Amount of wages SV, -value of wages not paid in money

- LA Number of hours worked

- LA Amount of social security contributions withheld

- LA Number of hours worked

- LA Amount of social security contributions withheld, -wage tax deducted according to table for special remuneration, -wage tax withheld according to table for special remuneration, -wage tax withheld according to table for special remuneration, -wage tax withheld according to table for special remuneration, -wage tax withheld according to table for special remuneration, -wage tax withheld according to table for special remuneration, -extra period salary, -accrued entitlement extra period salary

- LA accrued working conditions amount

- LA Withdrawal employment conditions amount

- LA Amount holiday allowance, -accrued entitlement holiday allowance, -private use car

- WGA Address role code

- WGA Street name, -House number, -House number suffix, -Home boat reference, -Home car reference, -Postal code, -Place name

- WGA PO Box number

- WGA Street name abroad, -House number abroad, -Postcode abroad, -Habitation name abroad, -Region name abroad, -Location description abroad, -Country code ISO structured, -Postbox number abroad

Retrieve additional data (D):

- annual published amount ANW relief

- the amount Jong disability allowance

- annually the wage tax tables on the site of the Tax and Customs Administration

- (in anticipation) of the standard percentage prescribed from the amended Participation Act in Balans assume a (possible) deduction by the employer of 50% of the paid WGA premium from the employee's net wage.

Provision to municipalities (F):

See technical operation (character limit of field reached)

Technical design

Provision to municipalities (F):

- BSN

- gsd code

- File code

- Household type

- Legal basis

- start-date-ukp

- end-date-ukp

- start-date-ikv

- end-date-ikv

- lb number

- adm unit-name

- liable to income (type of employment contract)

- Compulsory income description

- type-income relationship

- type-income-relationship-description

- start-date-lp

- end-date-lp

- paid-hours

- pay-sv

- pay-in-money

- value-not-paid-in-money

- inh-svp premium

- inh-svvpremium-normal

- inh-svvpremium-special

- value-use-car

- inh-lbph

- wage-lbph

- Inh-WGA/WHK-ind

- Inh-WGA-WHK-ind-normal

- Inh-WGA-WHK-ind-normal

- wage-lbph-normal

- wage-lbph-special

- inh-lbph-normal

- inh-lbph-special

- net wage-subtotal

- net wage-normal

- net-wage-subtotal

- net ANW benefit

- net ANW

- income-net-ind-excl-claim-vt

- ind-claim vt

- income-netind-incl-claim-vt

- income-netind-special

- holiday allowance-paid

- holiday allowance accrued-right

- accrual-awwb

- take-up-awvb

- net-wage-ind-vt

- net-wage-ind-avwb

- ind-loonhk

- applied payroll tax table

- applied-wage-tax-table-sort-table

- applied-payroll tax table-colour table

- applied-payroll tax table-payroll period

- applied-wage-tax-table-special-significance

- ad-unit-address

- ad unit-postal code

- ad-unit-location

- TagSignal type

- TagMultipleIKV

- TagAlternativeCalendar month

- TagBenefitsPayment

- TagStartStopPayment

- TagWageInNature

- TagCalculateBT

- TagFirstPensionPayment

- TagManualCalculation

- TagPrivateUseCar

Explanation:

A. The municipality's benefit file;

B. The application to UWV based on the municipality's benefit file;

C. The delivery of UWV's file of Citizen Service Numbers (BSN) with data on income, pensions and/or benefits;

D. Annually, the IB retrieves the following additional (indexed) data.

- The percentage to be determined annually by which the wage to be offset may be reduced on the basis of indicative WGA/WHK withholding (this percentage is based on the average WGA levy percentage published annually by the UWV, which is multiplied by factor 3). 50% of this then applies as a percentage deduction WGA/WHK from net salary.

- Height of fixed amount of ANW benefit (source: SZW, Decree on ANW benefit)

- The level of the fixed amount of the Young Disabled Persons Allowance (source: Tax and Customs Administration)

- Tables holiday allowance entitlement (source: SZW, Regulation Participation Act, art. 11-13)

- Payroll tax tables per year (source: Belastingdienst)

NB. These are public (publicly accessible) data, they are not personal data.

E. The IB compares the response file received by UWV with previous month and applies logic to only provide municipalities with new and/or payroll-changed income statements, enriched with a net indicative (normal and special) income calculated by the IB that is as close as possible to the amount to be deducted from benefits in accordance with the Participation Act. The response report also contains all the amounts used to calculate this income. Finally, information labels (tags) are given so that the information can be processed as efficiently as possible by the municipality. The signal information is stored (temporarily) within national facility within the IB;

F. Of the new and/or changed income declarations found, the IB issues a signal to the municipality.

External provider

Internally developed