35

Other administrative expenses

The breakdown of this item in the accompanying statement of profit or loss is as follows:

Breakdown of other administrative expenses (Millions of euros)

2019

2018

2017

IT and systems

(435)

(373)

(298)

Advertising and publicity *

(190)

(174)

(143)

Property and fixtures

(114)

(115)

(113)

Rent **

(44)

(185)

(178)

Communications

(71)

(70)

(60)

Outsourced administrative services

(86)

(109)

(142)

Tax contributions

(38)

(40)

(31)

Surveillance and security carriage services

(34)

(33)

(32)

Representation and travel expenses

(55)

(57)

(50)

Printing and office materials

(16)

(12)

(15)

Technical reports

(58)

(56)

(56)

Legal and judicial

(16)

(15)

(16)

Governing and control bodies

(10)

(10)

(8)

Other expenses

(81)

(47)

(27)

Total

(1,248)

(1,296)

(1,169)

* Includes advertising in media, sponsorships, promotions and other commercial expenses.

** The short-term amount of rental expenses in which IFRS 16 has not been applied is immaterial.

"Technical reports" relates to fees and expenses, excluding the related VAT, paid to the auditor, broken down as follows:

External auditor fees* (Thousands of euros)

2019

2018

2017

Auditor of the Group (PwC in 2019 and 2018; Deloitte in 2017)

4,974

4,862

11,028

Audit

3,817

3,762

3,766

Audit

3,285

2,817

2,879

Limited review

532

945

887

Other services

1,157

1,100

7,262

Financial due diligence

438

Comfort letters for issues

350

179

450

Agreed procedural reports

804

707

948

Other work

3

214

758

Support works in inspection activities

661

Regulatory advice

2,964

Cybersecurity services

995

Tax advisory services

48

Other auditors **

40

4,205

Audit

40

188

Other services

4,017

Total

4,974

4,902

15,233

(*) The services contracted with our auditors comply with the Spanish Auditing Act's requirements of independence, and none of the work performed is incompatible with auditing duties.

(**) Furthermore, in 2019, the accounts auditor of a Group company that is not deemed a Public Interest Entity, invoices an amount of EUR 80 thousand for its audit (EUR 85 thousand in 2018). Furthermore, the fees for other services invoiced by this auditor and its network to the Group in 2019 amount to EUR 9,661 thousand (EUR 7,823 thousand in 2018).

Information on the average payment period to suppliers

The following tables provide a breakdown of the required information relating to payments made and pending at the balance sheet date:

Payments made and outstanding at the balance sheet date (Millions of euros)

2019

Total payments made

2,807

Total payments pending

42

Total payments in the year

2,849

Average supplier payment period and ratios (Day)

2019

Average payment period to suppliers

23.20

Ratio of transactions paid

23.33

Ratio of transactions pending payment

16.93

In accordance with the Second Transitional Provision of Act 15/2010, the general maximum statutory period is 30 days, which may be extended to 60 days upon agreement of the parties.