18 Trade and other payables
| 2014 | 2013 |
Trade payables | 948 | 928 |
Bouwinvest Development B.V. | 10,572 | 2,900 |
Rent invoiced in advance | 4,873 | 4,497 |
Tenant deposits | 1,079 | 380 |
Service charge payments | 774 | 441 |
Payable incentives | - | - |
Promotion costs | 117 | 125 |
Tax | 77 | - |
Other payables | 1,085 | 470 |
Balance as at 31 December | 19,525 | 9,741 |
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The other payables relate to invoices yet to be received for maintenance of and investments in the portfolio.